Term
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Definition
| Measures Muscle Tone during sleep |
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Term
| EEG (electroenecephalograph) + diff't brain waves |
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Definition
| Summated brain wave activity |
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Term
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Definition
| waves that appear eyes closed: (8-12 Hz) - high amp with low frequency |
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Term
| Beta Waves (as in you beta be awake!) |
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Definition
| waves that appear during wakefulness; (13-30 Hz): low amplitude, high frequency) |
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Term
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Definition
I: Light Sleep, theta waves
II: K complexes, sleep spindles
III: quiet
IV: lower heartrate lower blood pressure, lower bodytemp
V: REM, loss muscle tone, sympathetic activity |
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Term
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Definition
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Term
| move through all stages of sleep in: |
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Definition
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Term
| 90 minutes after sleep onset |
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Definition
| Rem + sympathetic activation start |
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Term
| Seven Changes in REM sleep |
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Definition
| 1. EEG is similar to awake "non" pattern: desynchornized, low voltage. 2. Increased sympathetic activity (heart rate, blood pressure) 3. Rapid Eye Mov't starts. 4. PGO waves 5. Loss of muscle tone 6. Vivid, episodic dreams 7. Signs of sexual arousal |
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Term
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Definition
| Pons- Geniculate nucleus - Occipital Cortex spikes: predict onset of REM |
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Term
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Definition
| is it a way to stay away from preditors? Brain activity is only reduced a little... |
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Term
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Definition
| creates ulcers, increased activity, death, feeling of helplessness |
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Term
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Definition
| this type of sleep is involved with restoration, recovering & unlearning |
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Term
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Definition
| This type of sleep is a period of integration of neural activity with previous experiences: this is why infants spend more time in this type of sleep (80%) |
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Term
| Ascending Reticular Activating System - "Reticular Formation" |
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Definition
| this system alerts to new, diff't stimulus, and if you damage this area, it increases SWS. Also, if you electrically stimulate the RF, arousal is induced. |
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Term
| sleep is not due to chemical control |
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Definition
| this is proven by dolphin's having two hemispheres asleep at same time and siamese twins sleeping separately |
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Term
| neuroepinephrine & diff't activity patterns |
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Definition
| this neurotransmitter is found in the Locus coeruleus: it has high activity during wakefulness and low activity during SWS and no activity during REM |
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Term
| AcH & inhibitor & activity pattern |
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Definition
| this neurotransmitter inhibits muscle mov't during sleep, is inhibited by serotonin. It is found in the PONS and from there regulates the shift into REM (more of it = more REM) |
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Term
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Definition
| this is an interneuron b/t all brain areas of sleep.... can be enhanced by valium |
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Term
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Definition
| this is a peptide involved with narcolepsy |
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Term
| Ventrolateral Preoptic Area |
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Definition
| this junction b/t the hypothalamus & the basal forebrain, once damaged, leads to total insomnia. If electrically stimulated, it will produce sleepyiness |
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Term
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Definition
| these neurons usually put us to sleep, are blocked by caffeine and associated with ventrolateral preoptic area |
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Term
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Definition
| this area of the brain starts PGO waves, and therefore regulate shift into REM. See AcH |
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Term
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Definition
| "REM-on" neurons, found in pons... when entering rem, activity goes up |
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Term
| noradrenegetic + serotonergic neurons |
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Definition
"REM-off" - in locus coeruleus & raphé nuclei
when exiting REM, these two types of neurons go up |
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Term
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Definition
| 12% of population - can be situational, drug induced (overuse of sleeping pills), sleep apnea (person stops breathing) |
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Term
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Definition
| two types of this are sleep attacks (urge to sleep during day) & cataplexy (sudden REM paralysis) |
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Term
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Definition
| deficits in this type of hypothalamic neuropeptide is linked to narcolepsy |
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Term
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Definition
| this disorder is when people act out their dreams: "REM w/o Atonia" |
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Term
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Definition
| this disorder is when ppl can't go to sleep at all and die after about a year |
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Term
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Definition
| 1 cycle of this is about a day: 24 hours |
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Term
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Definition
| circadian rhythm is reset by... |
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Term
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Definition
| this nucleus is the bioclock, which governs some circadian rhythms; it is involved with melotonin, and neurons from the optic nerve synapse there |
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Term
| Where does SCN recieve input from |
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Definition
| This nucleus recieves input from ganglion cells in retina (reset biorhythm) and lateral genicluate nucleus of the thalamus |
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Term
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Definition
| this function involves how light resets the biorhythm, and how ppl placed in bunkers run at later and later rhythm of ~ 25 hours |
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