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Neurotransmission and Drugs Overview (DETAILED ANSWERS) Semester 2 2024 - DISTINCTION_.pdf
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Neurotransmission and Drugs Overview (DETAILED ANSWERS) Semester 2 2024 - DISTINCTION_.pdf
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8/11/24, 7:35 AMNeurotransmission and Drugs Overview
Jeremiah
Terms in this set (23)
EPSP Excitatory postsynaptic potential causing depolarization
IPSP Inhibitory postsynaptic potential causing hyperpolarization
Catecholamines Include adrenaline, noradrenaline, and dopamine; mobilize brain and body
Dopamine Regulates movement, reward-seeking, and motivation
Serotonin Regulates happiness, sleep, and appetite; increased by antidepressants
Opioids Include endorphin and enkephalin, natural morphine for pain reduction
Nitric Oxide Soluble gas in dendrites, influences presynaptic mechanisms
Ionotropic receptors Directly open ion channels when neurotransmitter binds
Metabotropic receptors Indirectly activate signal transduction pathways when neurotransmitter binds
Agonists Turn on neurotransmitter system, amplify effects
Antagonists Turn off neurotransmitter system, block receptors
Inverse agonists Bind to receptors but induce opposite effect of neurotransmitters
Sensory processing steps Stimulus → sensation → perception → emotion → memory
Sensation Activation of sensory brain pathways by physical stimuli
Perception Extraction of mental representation from sensation
Psychophysics Study of how physical stimuli correlate with perceptions they evoke
Sensory coding Correlation of physical stimuli with neural activity
Receptor cells Specialized cells responding to physical sensory stimuli
The pupil allows light to go in and hit our lens
Purpose of the lens focus light on the back of our eye
where is the retina? the back of the eye
what happens at the retina? this is where the neural processing of light starts
occurs in the critical thin layer of retina cells. where th light gets converted into a neural
phototransduction
signal
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