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| Absolute Refractory Period |
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Definition
| time immediately after an action potential, when the sodium gates close and the membrane cannot produce an action potential in response to stimulation of any intensity |
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| Across-fiber pattern principle |
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Definition
| notion that each receptor responds to a wide range of stimuli and contributes to the perception of every stimulus in the system |
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Definition
| hormone that stimulates the human adrenal cortex to release cortisol and the rat adrenal to release corticosterone |
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| rapid depolarization and slight reversal of the usual polarization caused by stimulation beyond the threshold |
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| temporary effect of a hormone on behavior or anatomy. occurring only while the hormone is present |
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Term
| Activation-synthesis hypothesis |
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Definition
| view that during dreams, various parts of the cortex are activated by the input arising from the pons plus whatever stimuli are present in the room, and the cortex synthesizes a story to make sense of all the activity. |
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| conditions having a sudden onset and a strong possibility of ending quickly |
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| protein-mediated process that expends energy to pump chemicals from the blood into the brain |
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| decreased response of a stimulus as a result of recent exposure to it |
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| breakdown product of AMP that forms during metabolic activity; a neuromodulator that inhibits the basal forebrain cells that promote arousal and wakefulness |
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| a compound that stores energy; also used as a neuromodulator |
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| one that uses oxygen during activity |
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| neuron that brings information into a structure |
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| tendency of a drug to bind to a particular type of receptor |
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| drug that mimics or increases the effects of a neurotransmitter |
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Term
| Agouti related peptide (AgRP) |
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Definition
| inhibitory neurotransmitter found in the areas f the hypothalamus that regulate feeding |
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Definition
| adrenal hormone that causes the kidneys to conserve sodium when excreting urine |
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