Psychology and Sociology Flashcards
Who developed the study of phrenology?
Franz Gall
What did Pierre Flourens do to brains?
He studied brain function by cutting out portions of the brain (ablation/ extirpation).
Where would efferent neurons send signals to?
From the brain and spinal cord to muscle and gland tissues
Where would afferent neurons send signals to?
From receptors to the brain and spinal cord
What neurons are responsible for reflexive behavior?
Interneurons- found predominantly in the CNS and allow for reflex arcs to occur
What part of the autonomic nervous system would constrict the pupils and slow heartbeat?
Parasympathetic
What part of the autonomic nervous system would relax bronchi and accelerate heartbeat?
Sympathetic
What layers of the skull help reabsorb cerebrospinal fluid and protect the brain?
The 3 meninges (dura mater, arachnoid mater, pia mater)
What division of the brain is the Cerebral cortex in and what are its functions?
Forebrain; complex perceptual, cognitive, and behavioral processes.
What division of the brain is the Basal Ganglia in and what are its functions?
Forebrain; controls smooth movement
What division of the brain is the Limbic System in and what are its functions?
Forebrain; responsible for emotion and memory
What division of the brain is the Thalamus in and what are its functions?
Forebrain; serves as a relay center for sensory information (except for smell)
What division of the brain is the Hypothalamus in and what are its functions?
Forebrain; autonomic responses to hunger, thirst, temperature
What division of the brain is the Inferior/Superior Colliculi in and what are its functions?
Midbrain; involuntary responses to visual or auditory stimuli
What division of the brain is the Cerebellum in and what are its functions?
Hindbrain; maintains refined body movements (impaired by alcohol)
What division of the brain is the Medulla Oblongata in and what are its functions?
Hindbrain; vital reflexes (breathing, heartbeat)
What division of the brain is the Reticular Formation in and what are its functions?
Hindbrain; plays a role in arousal and alertness
What division of the brain is the Pons in and what are its functions?
Hindbrain; serves as a pathway between the cerebral cortex and the medulla oblongata, important for breathing
Which part of the hypothalamus, if injured, would cause someone to lose the desire to eat?
Lateral Hypothalamus injury causes someone to Lack Hunger
Which part of the hypothalamus, if injured, would cause someone to never get satisfied from eating?
Ventromedial Hypothalamus injury causes someone to be Very Hungry
Which part of the hypothalamus, if injured, would cause someone to hump everything?
Anterior Hypothalamus injury causes someone to Ass Hunt
The jerky movement of Parkinson’s disease show that there is injury to what part of the brain?
Basal Ganglia
Stimulation of this part of the brain is extremally pleasurable?
The Septal Nuclei
When exhibiting defensive/ aggressive behaviors you are using what part of the Limbic System?
Amygdala
Damage to which part of the brain would impact learning and memory?
Hippocampus
What type of memory loss prevents the creation of new long-term memories?
Anterograde Amnesia
What type of memory loss prevents the recall of events before an injury occured?
Retrograde Amnesia
What part of the limbic system is connected to the Cerebral Cortex and helps regulate impulse control?
The Anterior Cingulate Cortex
What are the valleys in the brain called and what are the bumps called?
Sulci- valleys (sulky and sad and low)
Gyri- bumps
What are the four lobes of the Cerebral Cortex?
Frontal- executive functioning, Broca’s area
Parietal- sensing of touch, pressure, pain
Occipital- visual/striate cortex for vision
Temporal- auditory cortex, Wernicke’s area
What would damage to Broca’s area cause?
An inability to generate words
What would damage to Wernicke’s area cause?
An inability to comprehend language
What is the difference between an association area and a projection area?
An association area combines diverse inputs from all over the brain (ex. making plans). Projection areas only focus on one rudimentary task (ex. sending muscle impulses)
What side of the brain would control movement of the left side of the body and what laterality is this?
The right side of the brain would control the left side of the body; it would control it controlaterally
What side of the brain would sense a sound on the left side of the body and what laterality is this?
The left side of the brain would sense a sound on the left side of the body; hearing is communicated ipsilaterally
What is the difference between the dominant and non-dominant hemispheres?
The dominant hemisphere is associated with analytic function such as details and contains Broca’s and Wernicke’s areas. The non-dominant hemisphere is associated with creativity.
Is it more common or less common to have the right side of your brain as the dominant hemisphere?
Less common
What would a drug that mimics the action of GABA in the brain be called?
An agonist
What would a drug that blocks the action of Acetylcholine be called?
An antagonist
Low levels of Acetylcholine in the peripheral and central nervous systems would cause what?
Peripheral- lethargy, weakness
Central- Alzheimer’s, memory loss
What is the difference between epinephrine and norepinephrine?
Norepinephrine- Neurotransmitter
Epinephrine- systematic hormone
Why are high levels of dopamine found in the Basal Ganglia?
Dopamine is associated with controlling posture and movement which is a major function of the Basal Ganglia
What do high and low levels of Serotonin cause respectively?
High Serotonin- manic states
Low Serotonin- depression
What is the role of GABA in the brain?
It reduces the activity of neurons in the brain
What two amino acids serve as neurotransmitters?
Glycine- reduces activity of neurons
Glutamate- excites neurons
When you listen to music, you feels less pain. This can be attributed to?
The production of endorphins and enkephalins in the brain which are natural pain-killers
What connects the nervous and endocrine systems?
The Hypophyseal Portal connects the hypothalamus to the pituitary gland
In development what do the neural tube and neural crest become?
Neural tube- CNS
Neural crest- PNS
How are the Moro and Babinski reflex different?
Moro- baby extends arms in response to falling
Babinski- baby extends big toe and fans others
How are the rooting and grasping reflex different?
Rooting- baby turns head to stimulus
Grasping- infant grabs stimulus
Give an example of sensation and an example of perception?
Sensation- your body feeling the ambient heat from the air
Perception- your body realizing its hot outside
What is the difference between proximal and distal stimuli?
Distal stimuli often produce proximal stimuli (ex. a bonfire produces photons, soundwaves, and energetic particles as heat)
What type of threshold would not be reached from an extremally high pitched sound?
The absolute threshold
What type of threshold would not be reached from a sound that is sensed but does not reach higher order brain areas that control consciousness and attention?
The threshold of conscious perception
What threshold would be reached if two sounds are played and the listener is able to detect that they are different?
The difference threshold (Just-noticeable difference)
What type of testing is performed to find the difference threshold?
Discrimination testing (ex. researchers play one sound and then play another sound at a higher volume until the subject is able to detect a difference)
What law states that it is more accurate to state difference thresholds as percentages?
Weber’s law
What is the white of the eye?
Sclera
What is the first thing that light passes through when it reaches the eye?
Cornea
What is the anterior chamber behind the cornea filled with?
Aqueous humor
What part of the eye focuses light onto the macula in the retina?
The lens
What two fluids support the structure of the eye?
Vitreous and aqueous humor
How would the eye respond to change its focus onto a distant object? What is this called?
The parasympathetic nervous system would signal the ciliary muscle to contract and pull on the suspensory ligaments thus changing the shape of the lens. This process is called accommodation
What is the mnemonic for the photoreceptors found in the retina?
Cones are for COLOR vision while Rods are for RODUCED light
Damage to the fovea in the eye would cause what?
Decreased ability to see colors because cones are concentrated here
Describe the pathway of light from sensation to perception
- light hits the cornea and passes through the lens and vitreous humor
- light reaches either rods or cones
- a signal is sent to bipolar cells
- a signal is sent to ganglion cells (optic nerve)
- the signal is sharpened by amacrine and horizontal cells
- the signal is sent down the optic nerve to the optic chiasm
- the signal follows the optic tract and either reaches the lateral geniculate nucleus in the thalamus which travel to the visual cortex in the occipital lobe
OR
the signal is sent directly to the superior colliculus which responds to light reflexively (ducking your head)
The right field of vision is influenced by which eye?
It is influenced by both eyes as the right field of vision is a combination of the nasal retina of the right eye and the temporal retina of the left eye
What is detected by parvocellular cells in the LGN?
form
What is detected by magnocellular cells in the LGN?
motion
What is detected by binocular cells in the LGN?
depth
When on a rollercoaster what sense is responsible for detecting the loopedy loops?
Vestibular sense
When someone says “you have big ears” what are they most likely referring to
The Pinna (auricle)
If the tympanic membrane oscillates back and form at a quick rate what type of sound is processed?
A high pitch sound
If the eardrum oscillates back and forth with a low frequency but a large amplitude what type of sound is processed?
A loud low pitch sound (subwoofer)
As the eardrum vibrates back and forth what 3 bones are activated that further transmit the sound into the inner ear?
The Tympanic membrane vibrates the Malleus (hammer) which interacts with the Incus (anvil) which interacts with the Stapes (stirrup) which rest on the Oval Window of the Cochlea
What does the bony labyrinth of the inner ear refer to?
The hollowed out portion of the temporal bone filled with Perilymph fluid that the inner ear sits in
What does the membranous labyrinth of the inner ear refer to?
The collection of tubes and chambers that are filled with Endolymph
What part of the membranous labyrinth contains the receptors for hearing?
The Cochlea
What structures in the inner ear are responsible for detecting linear acceleration?
The Vestibule contains the Utricle and the Saccule which contain hairs that resist changes in motion and signal the nerves they are attached to in the presence of motion
What structures in the inner ear is responsible for detecting angular acceleration?
The Semicircular Canals each contain Ampulla where hairs for detecting this motion are located
After reaching the Cochlea, how does sound reach perception?
The Cochlea triggers the Vestibulocochlear nerve to signal the Brain Stem where it ascends to the Medial Geniculate Nucleus of the Thalamus. From there nerves extend into the Auditory Complex in the Temporal Lobe for processing. Some nerve impulses are sent to the Superior Olive (to tell where sound is coming from) and the Inferior Colliculus (to initiate startle reflexes).
How are humans able to detect varying pitches in sound?
The hairs in the endolymph are Tonotopically organized (different hairs for different frequencies)
What is the pathway of smell to perception?
Olfactory Receptors in the nasal passages send signals down Olfactory Nerves to the Olfactory Bulb which relays the signals via the Olfactory Tract to higher order regions of the brain
What is the pathway of taste to perception?
Taste receptors in the Papillae in the tongue send signals to the Brainstem which then ascend to the Taste Center in the Thalamus before traveling to higher order regions of the brain
What do Pacinian Corpuscles respond to?
deep pressure and vibration
What do Meissner Corpuscle respond to?
light touch
What do Merkel Cells responds to?
deep pressure and texture
What do Ruffini Endings respond to?
to streching
What do Free Nerve Endings respond to?
pain and temperature
What is the temperature at which objects feel cold?
Objects feel cold if they are below physiological zero or the normal temperature of the skin
Why do things feel less painful if you are being touched all over your body?
This is the premise of the Gate Theory of Pain
What is the ability to tell where your body is in space?
Proprioception
What type of processing refers to using feature detection, parallel processing, and individual sensory stimuli to make an “image”
Bottom up processing
What type of processing refers to using memories and expectations to recognize an object?
Top down processing
remember that the details- hieroglyphics-are at the bottom of a pyramid
What is the process of creating a complete image or idea by combining Bottom-up and Top-down processing?
Perceptual Organization
What are some of the Monocular (one eye required) cues and their definitions?
Relative Size- objects appear larger the closer they are
Interposition- when two objects overlap the front one is bigger
Linear Perspective- parallel lines converge in the distance
Motion Parallax- objects closer to us seem to move faster
What are some the Binocular (two eyes required) cues and their definitions?
Retinal Disparity- difference in images projected by either retina
Convergence- the brain detects the angle between the two eyes required to bring an object into focus
What is Gestalts Law of Proximity?
objects close together tend to be perceived as a unit (ex. four squares making one bigger square)
What is Gestalts Law of Similarity?
objects that are similar tend to be grouped together
What is Gestalts Law of Good Continuation?
objects that seem to follow the same pathway tend to be grouped together
What is Gestalts Law of Subjective Contours?
finding shapes in the absence of that shape
What is Gestalts Law of Closure?
when a space in enclosed by a contour, our brain tends to complete the contour as a shape
A person usually gets sick at the site of blood, however when they get a finger pricked they do not get sick. This is an example of what kind of stimulus?
a Subthreshold Stimulus
You are driving down the road. At some point you stop paying attention to all the lights from other cars, the street signs, and the music you are listening to. This is an example of what? You then snap back into reality when you hear a police siren. This is an example of what?
The point at which you stop paying attention to all the stimuli is called Habituation and the point when you start paying attention again is called Dishabituation
What are two types of associative learning?
Operant and Classical Conditioning
Dogs normally salivate when smelling meat. Pavlov rung a dinner bell right before feeding his dogs meat. After a couple weeks of doing this each night the Dogs now salivate whenever Pavlov rings the dinner bell. Identify the following from this experiment: unconditioned stimulus, unconditioned response, neutral stimulus, conditioned stimulus, and conditioned response.
Unconditioned Stimulus- smell of meat
Unconditioned Response- salivation
Neutral Stimulus- dinner bell ringing
Conditioned Stimulus- dinner bell ringing
Conditioned Response- salivation
What refers to the process of learning a conditioned response and what refers to losing this conditioned response?
Acquisition- learning conditioned response
Extinction- losing conditioned response
What is the process by which a conditioned response that had become extinct, now suddenly reappears with gusto?
Spontaneous Recovery
If a conditioned response starts to occur for more or various types of the conditioned stimulus, this is an example of what?
Generalization
If someone with conditioned response distinguishing between the details of a conditioned stimulus this is an example of what?
Stimulus Discrimination
In operant conditioning the process of adding an incentive to increase the likelihood of a certain behavior is called what?
Positive Reinforcement
ex. five guys after yard work
In operant conditioning the process of removing something that is bad to increase the likelihood of a certain behavior is called what?
Negative Reinforcement (ex. you don't have to do the dishes if you do your homework now)
In operant conditioning the process of adding an unpleasant consequence to decrease the likelihood of a certain behavior is called what?
Positive Punishment AKA Aversive Conditioning
ex. getting spanked for back talking
In operant conditioning the process of taking away a good stimulus in order to decrease to likelihood of a certain behavior is called what?
Negative Punishment (ex. not getting desert when I don't finish my veggies)
What is the difference between avoidance learning and escape learning as they relate to negative reinforcement?
Escape learning- the animal subject experiences the unpleasant stimulus and then does the behavior that will cause the stimulus to be taken away
Avoidance learning- the subject predicts the unpleasant stimulus and does the behavior to prevent the stimulus from ever happening
A dolphin trainer feeds a dolphin a fish every time they do a triple backflip. The trainer also uses a remote that emits a high frequency sound right before feeding the dolphin the juicy fish. Eventually the dolphin performs tricks whenever the trainer is close by, expecting a tasty fish. Identify the following terms: primary reinforcer, secondary reinforcer, conditioned reinforcer, and discriminative reinforcer.
Primary Reinforcer- fish
Secondary Reinforcer/Conditioned Reinforcer- sound
Discriminative Reinforcer- trainer
What is the difference between a fixed ratio reinforcement schedule and a variable ratio reinforcement schedule?
Fixed Ratio- reinforce behavior after a specific number of performances of a behavior
Variable Ratio- reinforce behavior after varying number of performances of a behavior
What is the difference between a fixed interval reinforcement schedule and a variable interval reinforcement schedule?
Fixed Interval- reinforce first instance of a behavior after a specific time period has elapsed
Variable Interval- reinforce first instance of a behavior after randomized time periods have elapsed
The process of getting subjects to do highly specific and detailed task by slowly changing the desired response is called?
Shaping (operant conditioning)
What is the definition of latent learning?
Associative learning that occurs regardless of a stimulus
When a reward in operant conditioning loosely matches the already instinctually expected reward for an animal this is an example of what?
Preparedness
What is it called when an animal that has been trained revert back to instinctual behaviors?
Instinctive Drift
What neurons fire repeatedly when an individual observes another person performing an action?
Mirror Neurons in the Cerebral Cortex
The type of observational learning that occurs as children are developing behaviors by watching others is called what?
Modeling
A persons brain is putting new information into memory which is an example of what?
Encoding
A student is actively studying material by writing notes in the margins of books and answering questions in a focused manner. This is an example of what type of processing?
Controlled (Effortful) Processing
A student best memorizes MCAT Biochemistry material by relating the definitions into events in his own life. This is an example of what effect?
Self-reference Effect
A boy used a dope pickup line and was able to get a girls number, unfortunately he didn’t have anything to write it down and thus kept repeating her number out loud until he could write it down. This is an example of what?
Maintenance rehearsal
What type of memory last for a very short duration of time and includes information from all our senses?
Sensory Memory
What is the difference between ionic and echoic sensory memory?
Ionic- visual stimuli
Echoic- auditory stimuli
What is the average person’s memory capacity for short term memory?
Around 7 things
What type of memory involves combining short term memory, attention, and executive function?
Working Memory (ex. solving math problems in your head)
What is the difference between maintenance rehearsal and elaborative rehearsal?
Maintenance- keeps information in the forefront of our consciousness (ex. repeating a phone number)
Elaborative- relates new information to things already stored in long-term memory in order to store the new information in long-term
What are the two types of long-term memory?
Implicit (procedural) memories that we do not know we have
Explicit (Declarative) memories we are conscious of
What are the two types of Explicit (Declarative) memory?
Episodic- events and experiences (ex. riding a bike with your child hood friend)
Semantic- facts and concepts (ex. names of the parts of a bike)
What is the name given to the type of memory that includes our explicit memories about our lives as well as our semantic memories that relate to our personal traits?
Autobiographical Memory
The process of identifying a previously learned thing is called what?
Recognition
The process of being able to learn a previously learned thing quicker is called what?
Relearning
The process of the brain grouping similar things together for better encoding is called what?
Chunking
The process of spreading activation is the reason why what type of cue can trigger previously learned things?
Recall Cue
What is the difference between source monitoring and context effect?
Context Effect- memory is aided by being in the location where encoding took place
Source Monitoring- the process of distinguishing whether a memory is from a real life event or not
How is state-dependent effect similar to the context effect?
They are both retrieval tools but state-dependent is being in the same mood as when encoding took place while context effect is being in the same location as the encoding took place
How are serial-position, primacy, and recency effect different?
They all relate to being able to memorize items in a list however:
Serial Position- relates to being able to recall items on a list based off what number in the list they are
Primacy- better at memorizing items at the beginning of the list
Recency- better at memorizing items at the ends of the list
A man remembers the 20 amino acids but can’t remember how the heck he learned them all. This is an example of what?
Source Amnesia
What causes the development of Alzheimer’s Disease?
The loss of acetylcholine in neurons that link to the hippocampus
In an microscopic study of an Alzheimer’s patient’s brain one would predict to find what?
1) Neurofibrillary tangles
2) Beta-amyloid plaques
A patient has severe memory loss, has clear “memories” that didn’t actually happen (confabulation), and is lacking in thiamine. What is the diagnosis doc?
Korsakoff’s Syndrome
What is the loss of ability to recognize objects, people, or sounds?
Agnosia
What is the difference between Proactive and Retroactive Interference in terms of memory loss?
Proactive- old information is interfering with learning new
Retroactive- new information is causing the loss of old memories
What is the memory associated with performing a task in the future?
Prospective Memory
Someone believes that whatever someone says they remembered under oath is exactly what the truth is. This person believes humans have what kind of memory?
Reproductive Memory
What theory of memory says that a person’s memory is effected by many factors including: imagination, semantic memories, and perception?
Reconstructive Memory Theory
What is the effect generated when outside information causes someone’s memory recall to be less accurate?
Misinformation Effect
What is the difference between and intrusion error and the misinformation effect?
Misinformation Effect- memory recall is less accurate due to outside information (ex. hearing a garbled sound and then guessing what it is but then someone telling you to listen for a specific sound)
Intrusion Error- memory recall is less accurate due to linking with preexisting memories (ex. trying to remember what a button is)
What is the term that describes the process of the brain breaking weak neural connections and improving strong neural connections?
Synaptic Pruning
Neurons in a person’s brain that help store piano playing skills are becoming stronger and stronger everyday the person plays. This is an example of what?
Long-Term Potentiation
What is the difference between cognition and memory?
Memory is the storage of things that we learned while Cognition is how our brains process and react to the information that could be stored in memory
What theory am I using to study when I both read and watch Khan academy videos on a subject?
Dual-Encoding Theory
Annie shows behaviors such as pushing toys off her high chair and reacting every time you play peek-a-boo with her. What stage of Piaget’s Cognitive Development is she in?
The Sensorimotor stage
A child repeatedly pushes toys off her high chair. This is an example of what reaction found in Piaget’s Sensorimotor stage?
A Secondary Circular Reaction
A child repeatedly sucks her thumb before going to bed. This is an example of what reaction found in Piaget’s Sensorimotor stage?
A Primary Circular Reaction
What is the difference between assimilation and accommodation in Piaget’s theory of Cognitive development?
Assimilation- the process of classifying new information into existing schemata (a group of behaviors or concepts)
Accommodation- modifying an existing schemata to make room for new information
(ex. a child seeing a cat for the first time may think it is a dog (assimilation into concept of 4-legged animal) but then when they discover that cats are separate than dogs they make a new schemata in their brain for this (accommodation)
What milestone ends Piaget’s Sensorimotor stage?
Object Permanence- knowing an object is still existing even if it is not visible
What is a child’s ability to create mental representations of external objects?
Representational thought
Annie starts to think a lot about how to make herself happy by playing dress-up as a fairy princess. What stage of Piaget’s Cognitive development is she likely in?
Preoperational
error
error
A kid is in Piaget’s Preoperational stage and gets mad when their sister has two smaller pieces of pizza while they only have one big piece. What concept is the kid having a hard time grasping?
Conservation- that physical amounts of things stay the same even if they are different sizes
The brain’s process of only focusing on one aspect of a phenomenon is called what?
Centration- (ex. focusing only on the number of pizza slices and not the sizes of the individual slices)
- This is usually found in children in the preoperational stage of Piaget’s cognitive development
Annie starts to think about what her friends may like to do and is able to engage in logical thought as long as she is holding the object she is thinking about. Annie is likely in what stage of Piaget’s Cognitive development?
Concrete Operational Stage
Annie is now 11 years old and is starting to be able to solve hypothetical problems posed by Jack the dunce. Annie is likely in what stage of Piaget’s Cognitive development? This problem solving of hypotheticals is called what?
Formal Operational Stage where a child has the ability of Hypothetical Reasoning
Brendan is very good at using his acquired knowledge to solve general chemistry problems. However he completely sucks at solving new problems that he has never experienced. What type of intelligence does Brendan demonstrate and what type does he not demonstrate?
Brendan has very good Crystallized intelligence but lacks in his Fluid Intelligence
What is the definition of Delerium?
Rapid changes in cognitive function that is reversible and caused by medical issues
When solving a problem, a person thinks back to the various ways they have solved a similar problem in the past. This tendency to approach the new problem with these old solutions in mind is called what?
Mental Set
Annie only sees a pencil as a writing utensil. This is an example of what?
Functional Fixedness
How is inductive reasoning different from deductive reasoning?
Inductive- starts with the details and seeks to make a theory from them
Deductive- starts with a theory an then seeks to find details from that
What is a Heuristic?
A simplified principle that is used to make decisions
A person makes the decision to not swim after watching several shows about sharks. This is an example of what type of heuristic?
Availability Heuristic- what first comes to mind is deemed significant
A person watches a coin get flipped an land on heads 10 times in a row and is then asked the probability that it will land on heads again to which they answer a higher chance for heads. This is an example of what type of heuristic?
Representativeness Heuristic- using stereotypes to make decisions
More specifically (since this situation is related to actual numerical information) this is an example of Base Rate Fallacy
What is the difference between disconfirmation principle and confirmation bias?
Disconfirmation Principle- a potential solution is discarded after it fails during testing
Confirmation Bias- a person only focuses on the information found during testing that boasters their beliefs
A person is asked a question that they do not know but when they are told the answer they claim to have known all along. This is an example of what?
Hindsight Bias
Someone still chooses to vote for Biden despite several incriminating reports that he is inferior to Trump. This person has very strong what?
Belief Perserverance
What is the definition of Intuition?
The ability to act on perceptions that may not be supported by available evidence (ex. Sherlock Freaking Holmes)
Using intuition to make quick decisions is called what?
Recognition-Primed decision model
Brendan got hit in the head with a dumbbell and is in a coma. What part of his brain is likely injured?
Reticular Formation- controls alertness
What is the difference between Alertness and Physiological Arousal?
Alertness- a state of consciousness where we are awake and able to think
Physiological Arousal- the bodies response to alertness that includes increased heart rate and cortisol levels
Characterize the stages of sleep a what waves would be found on an electroencephalogram
Alertness- presence of Beta Waves (high frequency low amplitude)
Relaxing- presence of Alpha Waves (high frequency high amplitude and slower)
Stage 1 Sleep- presence of Theta Waves (irregular wavelengths and low frequency)
Stage 2 Sleep- presence of Theta Waves, Sleep Spindles (high frequency burst), and K Complexes (singular high amplitude waves)
Stage 3 (Slow Wave Sleep)- presence of Delta Waves (very slow waves)
Non-REM Sleep- show physiological signs of wakefulness (beta waves)
When the Pineal Gland releases high amounts of Melatonin what does this trigger?
Sleep
What are the 3 theories for the purpose of dreams?
- Activation-Synthesis Theory: widespread neuronal activity that mimics sensory information causes dreams
- Problem Solving Theory: dreams aren’t tethered by real world rules and thus help us solve problems
- Cognitive Process Theory: dreams are the sleeping equivalent of stream of consciousness
What is the difference between Dyssomnias and Parasomnias?
Dyssomnias- related to issues with falling or staying asleep
Parasomnias- related to issues with abnormal behaviors during sleep
What is the mnemonic to remember Hypnagogic vs Hypnopompic Hallucinations?
HypnGOgic hallucinations occur when GOing to bed while HypnoPOmpic hallucinations occur when POpping out of bed
What is the process of getting more REM sleep after a period of sleep deprivation?
REM Rebound
What effect does alcohol have on GABA receptors in the brain and what does this cause?
It increases the activity (permissive effect) on GABA receptors causing diminished arousal and lack of self-control (disinhibition)
On of the long-term effects of alcohol consumption is Wernicke-Korsakoff’s Syndrome. Describe this illness.
Characterized by a thiamine deficiency that causes memory impairment and loss of motor skills
What are two types of Sedatives and how are they similar to alcohol?
Barbiturates and Benzodiazepines both have a permissive effect on GABA receptors in the brain