Physio and Psycho Flashcards
Medulla Function
Mouth and throat movements, respiration, hr, bp, injury = death
Pons
connects halves of cerebellum, relays info for movement, deep sleep, respiration, REM
Cerebellum
posture, balance, voluntary movements, procedure and implicit memories
attention, language and visual
what does damage to the cerebellum cause
ataxia (symptoms of intoxication)
Reticular Formation
coordination of eye movements and pain control
The RAS is part of what brain region and what does it do?
Reticular formation; mediates consciousness/ arousal, sleep wake and alerts to sensory signals
what is the reward seeking part of the brain and what else does it do
the substantia nigra, has motor control via the basal ganglia
degeneration of dopamine producing cells in the substantia nigra can cause
parkinson like symptoms
studies used electrical stimulation to show the contribution of what brain part to emotions
hypothalamus
the hypothalamus produces mammilary bodies, what is their role
memory and SCN (bodies bio clock)
what does GnRh do
regulates functions of the testes/ ovaries
what is the difference between oxytocin and vasopressin in the posterior pituitary
oxytocin: contractions and lactation, vasopressin: water balance via kidneys
what mental health disorders can Oxytocin help with
ASD, schizophrenia, disorders that involve deficits in recognition of emotions and facial expressions
which brain function is responsible for transmitting all sensory info, coordination of sensory/motor functioning, language, speech and declarative memory
Thalamus (relay station)
which condition is due to thiamine deficiency and how does that effect it
Korsakoff is due to thiamine deficiency that damages neuron’s in thalamus and mammillary bodies.
What is included in the stratum and what is it a part of
the stratum is part of the basic ganglia and has the caudate nucleus, putamen and nucleus accumbent to receive info from the cerebral but the globes pallid us transmits info to thalamus
what function does the basal ganglia have
initiation and control of voluntary movements, procedural and habit learning, cog functioning and emotions
mood disorders, schizo, adhd, ocd, Huntington’s and Parkinson’s have been related to damage in which area
basal ganglia
What is the role of the amygdala
fear, acquisition of conditioned fear, evaluation of emotional significance of events, recognizing emotions in facial expressions
how is PTSD related to the amygdala
associated with abnormal functioning and hyperactivity in the amygdale which produces distressing memories however hyperactivity of VPC can reduce normal regulation of activity
What is kluver-bucy syndrome
bilateral legions on amygdala, hippocampus and temporal lobes in monkeys led to hyperreality, reduced fear, hyper sexuality, blindness
The ___ is linked to motivation, memory and emotions to pain. Damage people can experience pain but cant____
cingulate cortex and not be emotionally distressed by the pain
Which brain region transfers declarative memories from short - long term
Hippocampus
damage in what cells and what cortex lead to impairments in episodic and spatial memory that is liked to Alzheimer’s
hippocampus cells and the entorhinal cortex (gateway for information entering and leaving the hippocampus
increases in cortisol levels in the hippocampus has the ability to do what
impair the retrieval of declarative memories
Brocas area is responsible for language so brocas aphasia is:
slow, laboured speech of nouns and verbs, impaired repetition and anomia (inability to recall names of familiar objects. comprehension of written and spoken language is intact
The prefrontal cortex is made up of what three areas and what are their functions
Orbiofrontal cortex: emotion regulation, social behaviour, damage causes poor impulse and social control
Ventromedial prefrontal: decision making, memory, emotion, damage causes poor decision making and confabulation
dorsolateral prefrontal: executive functions, damage causes concrete thinking and impair judgment and planning, apathy
what is confabulation and what two areas affect it
filling memory gaps with false information, the thalamus and ventromedial prefrontal
What does it mean to be somatotypically organized
it means that each part of the supplementary motor cortex is controlled by a specific cortical area
What is in the temporal lobe
auditory cortex: damage causes hallucinations and deafness
Wernickes aphasia: impaired comprehension of language. speech is fluid but contains word substitutions and is devoid of meaning
What are the three somatosensory agnosias
tactile: cant recognize items by touch. asomatognosia: lack of recognition of ones body. anosognosia: denial of ones illness
Damage to the left parietal lobe is linked to ideational apraxia, ideomotor apraxia and ____ syndrome
Gerstmanns syndrome: right left disorientation, loss of writing skills (agrophia) and loss of arithmetic skills (acalculia)
What is cortical blindness and the forms of blindsight
when the primary visual cortex is damaged but eyes and nerve are intact. blindsight is when people don’t see a stimulus but have an appropriate behavioural response to it. affective blindsight is when they respond emotionally correct
what is the inability to recognize faces of familiar people and what causes it
Prosopagnosia and lesions on occipital ltemporal junction
The PNS transmits signals between the CNS and ___
body
Sensory info is transmitted to the CNS via ____ then to the skeletal muscles
SNS
the ANS transmits signals between the ___ and ____
smooth muscle organs and the CNS
the AND consists of the sympathetic nervous system and the parasympathetic, which is the role of each
Symp: fight or flight response, pupil dilation, digestion, sexual activity
Para: rest and relaxation, return to pre emergency state
Sympathetic is to erection and parasympathetic is to____
ejaculation
Prior to stimulation, the inside of a neuron is ____
negative, sodium then makes it positive
Regarding neuroplasticity, homologus is
response to early damage, brain functions switch to corresponding area in other hemisphere
Regarding neuroplasticity, cross model reassignment
brain area responsible for processing sensory input is derived of input and function of area changes
Regarding neuroplasticity, map expansion
enlargement of functioning region as the result of practice which recruits neurons from a broader area (learning a new skill)
Regarding neuroplasticity, compensatory masquerade
no longer able to perform a task using cognitive processes mediated by damage, so it uses other processes
ACh causes muscles to contract what leads to muscle weakness
myasthenia gravis kills at neuromuscular junction
if ACh is low in the ethereal cortex and hippocampus it can lead to_____
early memory loss
Glutamate toxicity can lead to ______
strokes, seizures, huntingtons and Alzheimer’s
Degeneration of GABA and ACh is linked to the motor symptoms of what condition
huntingtons
What is the catecholamine hypothesis
states that depression is caused by low levels of norepinephrine and mania is caused by high levels of norepinephrine
Eating disorders have been linked to ____ levels of serotonin
higher than normal which causes obsessive thinking, food restriction lowers serotonin and stops symptoms
ASD and schizophrenia are linked to high levels of ____ in the blood
serotonin
what is the dopamine hypothesis
Schizophrenia is linked to high dopamine
The mesolimbic dopaminergic pathway begins in ___ and ends is ___, which is essential in the reward circuit
Tegmental and ends is striatum
the mesocortical begins in ___ and ends in ___, and is essential for emotion, motivation and exec cog functions
Tegmental and ends in prefrontal
the tuberofundibular begins in ___ and ends in ___ and is essential for hormone regulation and prolactin release
Hypothalamus and ends in pituitary
Nigrostriatal begins in __ and ends in ___, important for purposeful movement
substantia and ends in dorsal
Agonists: mimic or increase effects of a neurotransmitter, partial agonists due what
elicit similar but weaker effects than the trasnmitter
what do antagonists do
black or reduce effect of transmitter
What is the difference between bottom up and top down processing
bottom up starts with incoming sensory info and continues up to the brain
top down starts with the brains preexisting knowledge to interpret incoming sensory info
What is the difference between rods and cones
cones: best in bright light and for visual acuity and colour perception
rods: important for peripheral vision and seeing in dim light
Explain red/green colour blindness
most common, genetic, or injury, caused by recessive gene on X, females must inherit gene from both parents
What does retinal disparity do
occurs because eyes see objects from different views, closer object = better disparity
size of objects, textures and motions are types of ___ cues
Monocular
Grapheme - colour involves letters or numbers being associated with specific colours, this is a type of what condition
Synesthesia
Explain gate control theory
whether pain in transmitted depends on a gate that is opened by incoming pain signals and closed by transmission of signals in large fibres and info from brain
Which law predicts that the JND for a stimulus is in constant proportion regardless of intensity
Webers law
there is a logarithmic relationship in Fechers law between ____ and _____
psychological sensation and magnitude of physical stimulus
In a study of which law did participants assign a number to stimuli based on the sensations they elicited and what did it prove
in stevens power law the participants proved a exponential relationship
Signal detection theory makes which assumption
that perception of a stimulus is the outcome of both sensory and decision making processes
what affects decision making in signal detection theory
sensitivity (distinguish between stimulus and noise) and decision criteria which is the ability to say a stimulus is present in ambiguous situations
what is a miss in SDT experiments
when the signal is present but they say it isn’t
what value is measured by d-prime
sensitivity
HM had what areas removed and what happened after surgery
hippocampus, amygdala and temporal lobe were removed and after surgery, short term and procedural memories were intact but longterm episodic memory was affected and he couldn’t transfer declarative info from short to long term
the hippocampus in important for consolidation of which forms of memory
declarative and spatial working
damage to the basil ganglia, cerebellum and supplementary motor cortex can lead to what difficulties in memory
trouble learning new skills and performing previously learned skills
damage to the amygdala affects memory how
individuals will have the same level of recall for emotional and nonemotional memories
the prefrontal is responsible for working memory in short term and prospective memory so lesions affect ____ more than ____
prospective more than time based which is remembering to do an action in time with no cue
damage to what area can cause anterograde and retrograde amnesia
thalamus and mammillary bodies
Kandals research with sea slugs showed that classical conditioning of reflexes can increase the release of serotonin in ____ memory
short term
in regards to Kandal, long term storage is involved in the development of _____ changing the neutron structure
new synapses
Long term potentiation occurs in neurons as a result of ____
rapid high frequency stimulation important in learning and memory
low frequency, high amplitude alpha waves are associated with what sleep stage when they are replaced with low frequency, low amplitude waves
stage one
what are sleep spindles
associated with stage two ofd sleep, sleep spindles are sudden bursts and fast waves and K complexes (large, slow waves)
what is paradoxical sleep
in stage five when brain is active and muscles are paralyzed (REM sleep)
deep sleep is characterized by slow waves in what stages
stage 3 and 4
Following 10 minutes of REM sleep, a person cycles through non rem and rem stages but what increases
length of REM increases and time in stage 3 and 4 decreases
circadian phase advance occurs in older adults and involves ____
going to sleep earlier
what theory predicts that smiling makes us feel happy and why
james lange theory because off the facial feedback hypothesis because exposure to an emotionally client stimulus causes a physiological reaction perceived as emotion
differences in emotional reactions cannot be attributed to differences in ______ because of which theory
differences in physiological arousal and it’s due to cannon bard theory
the two factor theory of emotion shows that emotion is a result of physiological arousal followed by an attribution for that arousal. In this regard miss attribution of arousal is _____
tendency to mislabel arousal which its cause is unknown
Individuals experiencing unexplained arousal will look to the environment to determine _____
what emotion they experienced
Excitation transfer theory incorporates misattribution of arousal and is an explanation of how physical arousal can do what
Physical arousal elicited by one event can be transferred to act intensity arousal at an unrelated event
What are the three assumptions of excitation transfer theory?
Physical arousal associated with emotions, decays slowly, following in event.
Residual arousal caused by one event, can identify arousal at an unrelated event
People have limited insight into the cause of their physical arousal
Cognitive appraisal theory refers to what three types of appraisal
Primary appraisal , secondary appraisal, and reappraisal
Ledoux’s two system theory shows that the subcortical system (survival system) reacts quickly and automatically to sensory info with ____
physiological and defensive behavioural responses
the cortical system is a conscious emotional system that does what
processes inför from the senses by using relevant cognitive processes and generates the conscious feeling of fear when it determines a stimulus warrants it
the cortical system includes areas of the cortex that do what
Process sensory information and it is involved in non-emotional conscious experiences
what is included in the papez circuit
Hippocampus, mammillary bodies, thalamus, and cingulate gyrus
What is the difference between the left hemisphere and the right hemisphere? In terms of emotions?
The left hemisphere, mediates, happiness, positive emotions, and damage can cause anxiety or depression, and the right hemisphere is for negative emotions, and sadness, and damage can cause in indifference
the hypothalamus regulates physical signs of emotion through communication with the ANS and the ___
pituitary gland
the general adaptation syndrome refers to the body’s response to all types of stress. what are the three stages
the initial alarm stage, the resistance stage and the exhaustion stage
what is the allostatic load model
the brain is the key organ of stress and determines if something is threatening. being in a allostatic state can produce wear and tear leading to allostatic overload
a stroke is also known as ____
a cerebrovascular accident and is caused by an interruption of blood flow to the brain that causes a loss of neurological function
what are the two types of strokes and why do they happen
A ischaemic stroke is the most common and is caused by a blockage in the cerebral artery. If it developed in the brain, it’s a thrombotic stroke. If it developed elsewhere, it is an embolic stroke.
A hemorrhagic stroke is caused from bleeding from a rupture in the cerebral artery or in the space between brain and membrane
visual impairment during a stroke occurs when ____ is involved
the posterior cerebral