Unit 3&4 Flashcards
Central nervous system
Brain and spinal cord
Peripheral nervous system
Made of somatic and autonomic nervous system
Somatic nervous system
Voluntary movement of skeletal muscles, motor neurons communicate with central nervous system
Autonomic nervous system
Mostly without voluntary control, response to threats like fight, flight or Freeze or responding to homeostasis, like shivering 
Spinal reflex
Occurs when spinal-cord initiates response independent of the brain, enables faster, reaction times to reduce risk of being harmed
Monosynaptic reflex
Direct communication between sensory and motor neurons, for example, the patella reflex
Polly synaptic reflex
Multiple steps involved , Stimulation of pain receptors within skin, initiates withdrawal reflex 
Frontal lobe
Executive functions, thinking, planning, organisation, problem-solving, behavioural control, personality
Motor cortex
Movement
Sensory cortex
Senses like touching temperature
Occipital lobe
Receiving and processing visual information
Temporal lobe
Identifying and processing sounds
Parietal lobe
Perception, making sense of the world
Broca’s area 
Production of speech, control of face muscles. This is in the frontal lobe.
Brocas aphasia 
Broken speech
Wernickes area 
Comprehension of written and spoken language or speech Found in the parietal lobe 
Wernickes aphasia
Talking nonsensical sentences
Gerschwinds territory
Connect Brocas and Wernickes Areas with other parts of the brain to assist in processing, this is found in the temporal lobe 
Parts of the brain involved in voluntary movement
Primary motor cortex, cerebellum, Basil ganglia
Primary motor cortex role in voluntary movement
Execute movement Land by pre-motor cortex, the bigger, the movement, the more neurons 
Cerebellums role in voluntary movement
Coordinates details of movements, store sequences of movements and communicates with motor cortex
Basil ganglia
Receives information from motor cortex, decides which action to perform
Parts of the brain involved in the limbic system
Hypothalamus thalamus, amygdala hippocampus
Hypothalamus role in limbic system
Regulates autonomic, nervous system like flight, fright or freeze
Thalamus
Relays sensory information
Amygdala Role in limbic system
Initiates, fear, anger, and aggression
Hippocampus Bro in limbic system
Emotional regulation and converts short-term memory into long-term memory
Neurons process
An action potential travels down the axon, causing neurotransmitters to be released across the signups, these attached to receptors on the receiving dendrite, creating an action potential in the next neuron
Neurotransmitter process
Undergo a lock and key process that allows correct neurotransmitter to be released
Glutamate
Excited Tory neurotransmitter makes the neuron more likely to fire
GABA
Inhibitory neurotransmitter makes near and less likely to fire
Acetylcholine 
Made up of CNS and PNS causes muscle contractions voluntary or not. It has a role in learning memory and rem sleep
Epinephrine
Hormone is found in blood, released as a stress response regulates fear, anxiety, and emotional. Arousal increases, heart rate, breathing and blood pressure.
Norepinephrine
Stress response increases alertness and arousal increases blood pressure and releases glucose into the blood regulates mood, control and concentration
Dopamine
Has Rowell in thoughts, feelings, motivation, and behaviour, the brains, reward/pleasure centres, and reinforcer of behaviour self
Serotonin
Regulates mood, eating arousal and pain. A decrease in serotonin can lead to depression, affects feelings of well-being and happiness and sleep
Parkinsons disease
Caused by an imbalance of dopamine and Acetylcholine Causes fatigue, constipation, rigidity, slowness of muscle movement and can be treated with dopamine 
Alzheimer’s
Brain cells, death, decrease in Acetylcholine Causes memory loss, confusion, impaired attention, and the treatment is an enzyme that prevents breakdown of ACh 
Steps of visual perception
Reception, transduction, transmission, selection, organisation, interpretation
Reception
Visible light enters the eye. The lens focuses the light on the retina.
Transduction
Demi, less energy turns into impulses of electrochemical energy by sensory receptors
Transmission
Signals travel via optic nerve to the occipital lobe
Selection
Feature detector cells filter information, so the brain isn’t overwhelmed
Organisation
Visual information is processed in the temple in prior to load make sense of what it is seeing
Interpretation
Assigning, meaning to stimuli, so it can be understood
Biological influences of vision
Ageing (glaucoma cataracts), genetics, inherited, like eye or congenital
Physiological make up (structural, and your pathways, damaged, light colour blindness due to photo receptor damage)
Social influences on perception
Cultural Skills. For example, the Hudson study, proving education and familiarity with pictures, influences perception, the spirit animal photo
Psychological influences of vision
Perceptual set:
Emotional state, past experience, exposure to stimuli, context, motivation. (we see what we want to see).
Visual perception principles (phych influence of visual perception)
Gestalt principles, such as figure ground orientation proximity continually closure
Visual constancy in depth perception also contribute
Depth cues
Ability to accurately judge, three-dimensional space and distance phasing keys from environment around us is can Be binocular or monocolour
Visual constancies
Tendency to maintain a stable perception of the stimulus, even though the image on the retina made change
Sensory memory
Unlimited capacity split into iconic which is visual memory that asked for 0.3 seconds and echoic memory she’s acoustic which and lasts for 3 to 4 seconds
Short-term memory
Capacity is 5 to 9 items in last 18 to 30 seconds
Long-term memory
Potential for unlimited capacity and duration
Explicit/declarative memory
Semantic, it is for general knowledge and episodic, which is for important memories such as graduation or first kiss
Implicit memory
Unconscious memory, split into procedural, or how to do things like driving or breathing and classical conditioning
Working model of memory
Made up of central executive visiospatial sketchpad phonological loop, episodic buffer  Shows the working of short-term memory
Central executive
Role in attention and processing
Visiospatial Sketchpad
Visual invert
Phonological loop
What something sounds like
Episodic buffer
Accesses, long-term memory
Strengths of working model of memory
Ability to multitask supported by experimental evidence that visual and verbal memory is sorted into different places