Term
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Definition
| no tone; condition of complete muscle inactivity produced by the inhibition of motor neurons |
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Term
| basic rest-activity cycle BRAC |
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Definition
| recurring cycle of temporal packets, about 90 min periods in humans, during which an animals level of arousal waxes and wanes |
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Term
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Definition
| fast brain-wave activity pattern associated with a waking EEG |
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Term
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Definition
| neural system that times behavior |
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Term
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Definition
| inherent rhythm that controls or initiates various biological processes |
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Term
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Definition
| form of narcolepsy linked to strong emotional stimulation in which an animal loses all muscle activity or tone, as if in REM sleep, while awake |
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Term
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Definition
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Term
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Definition
| prolonged state of deep unconsciousness resembling sleep |
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Term
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Definition
| slow brain wave activity pattern associated with deep sleep |
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Term
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Definition
| organism that is active chiefly during daylight |
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Term
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Definition
| condition resulting from continuous use of "sleeping pills"; drug tolerance also results in deprivation of either REM or NREM sleep |
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Term
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Definition
| determination or modification of the period of a biorhythm |
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Term
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Definition
| rhythm of the body's own devising in the absence of all external cues |
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Term
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Definition
| dreamlike event at the beginning of sleep or while a person is in a state of cataplexy |
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Term
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Definition
| disorder of slow-wave sleep resulting in prolonged inability to sleep |
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Term
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Definition
| lower brainstem damage that results in a fully conscious, alert, and responsive condition, but the patient is quadraplegic and mute |
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Term
| medial pontine reticular formation |
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Definition
| nucleus in the pons participating in REM sleep |
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Term
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Definition
| hormone secreted by the pineal gland during the dark phase of the day-night cycle; influences daily and seasonal biorhythms |
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Term
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Definition
| brief period of sleep lasting a second or so |
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Term
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Definition
| slow wave sleep disorder in which a person uncontrollably falls asleep at inappropriate times |
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Term
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Definition
| slow wave sleep associated with delta rhythm |
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Term
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Definition
| cholinergic nucleus in the dorsal brainstem having a role in REM sleep behaviors; projects to medial pontine reticulum |
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Term
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Definition
| time required to complete a cycle of activity |
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Term
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Definition
| hippocampal neuron that fires when a rat is in a certain location in an environment |
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Term
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Definition
| fast brain wave pattern displayed by the neocortical EEG record during sleep |
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Term
| reticular activating system |
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Definition
| large reticulum (mixture of cell nuclei and nerve fibers) that runs through the center of the brainstem |
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Term
| retinohypothalamic pathway |
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Definition
| neural route from a subset of cone receptors in the retina to the suprachiasmatic nucleus of the hypothalamus; allows light to entrain the rhythmic activity of the SCN |
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Term
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Definition
| inability to breathe during sleep; person has to wake up to breathe |
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Term
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Definition
| inability to move during deep sleep owing to the brain's inhibition of motor neurons |
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Term
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Definition
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Term
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Definition
| main pacemaker of circadian rhythms located just above the optic chiasm |
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Term
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Definition
| inactive condition resembling sleep but with a greater decline in body temperature |
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Term
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Definition
| environmental event that entrains biological rhythms; a "time giver" |
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