Susie Chapter 14 Flashcards

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1
Q

most of us sleep for about __ hours per night

A

8

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2
Q

the __ __ cycle is an endogenous rhythm that gradually becomes locked to the day-night cycle through the __ years of life, this is called __ __

A

sleep-wake, first, circadian rhythm

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3
Q

the sleep pattern is controlled by cells in the __ just above the optic chiasm called the __ __

A

hypothalamus, suprachiasmatic nucleus (SCN)

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4
Q

what is one unusual part about the cells in suprachiasmatic nucleus?

A

they have lots of synapses between their dendrites to synchronise their firing together

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5
Q

the free-run cycle is about __ hours

A

25

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6
Q

when awake, what kind of electrical activity does our brain have?

A

low-amplitude

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7
Q

on slow-wave sleep stages. there is __ in amplitude and __ in frequency

A

increase, decrease

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8
Q

when you are asleep, your __ neurons may be actively inhibited, while your neurons controlling __ and __ __ can still work normally

A

motor, respiration, heart rate

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9
Q

on which stage do we dream and our eyes move rapidly?

A

rapid eye movement (REM)

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10
Q

do animals experience REM sleep?

A

yes

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11
Q

REM sleep occurs about __ times each night.

A

4

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12
Q

is sleep mostly for the brain or body?

A

the brain

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13
Q

an NT called __ is in a molecular chain reaction that takes us through various sleep stages

A

adenosine

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14
Q

the name of the fruit fly that has been studied on neurogenetics

A

drosophila

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15
Q

the two genes that produce proteins that interact together to regulate their own synthesis is called __ and __

A

per and tim

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16
Q

what is the hormone that is suppressed by daylight and is released in night time?

A

melatonin

17
Q

the production of per and tim produce a __ feedback loop

A

negative

18
Q

the __ and __ proteins are transcription factors for per and tim

A

clk, cyc

19
Q

__ (protein)makes __ (protein), and __ shuts down __ creating a negative feedback loop

A

clk, per, per, clk

20
Q

what can degrade tim and per and thus allows clk and cyc start to work again?

A

sunlight

21
Q

the greatest proportion of REM sleep occurs in …

A

the first months of life

22
Q

effect of sleep deprivation is mainly on…

A

performance of mental tasks

23
Q

what occurs during slow wave sleep

A

increased blood flow to the cerebral cortex