ap psych - 1.5 sleep

consciousness

subject awareness of surroundings and self

cognitive neuroscience

study of brain activity w/ cognition

dual processing

that info is often simultaneously processed in diff. conscious & unconscious tracks

blindsight

condition where person can respond to stimuli w/o consciously experiencing it

parallel processing

process of multi aspects of stimulus or problem at the same time

sequential processing

process 1 aspect of stimulus/problem at a time

(for new or difficult problems)

sleep

periodic natural loss of consciousness

circadian rhythm

biologic clock, regular bodily rhythms occurring in 24 hr cycle

REM sleep

rapid eye movement - reoccurring sleep stage

vivid dreams, systems r active

Alpha waves

slow brain waves → relaxed & awake

nREM sleep

non-rapid eye, all stages of sleep but REM

hallucinations

false sensory experiences, in absence of external visual stimuli

hypnagogic Sensations

movement like jerks, falling, or floating feeling when transitioning to sleep

delta waves

large, slow brain waves in sleep

suprachiasmic nucleus

paired cell cluster s in hypothalamus→ control circadian rhythm (regulate melatonin)

Insomnia

inability to sleep

nacrolepsy

brain inability to regulate sleep cycle → chronic fatigue & sleep

sleep apnea

interruptions in breathing during sleep, due to obstructions or brain malfunc.

REM sleep behavior disorder

physically acting out of vivid dreams in REM

dream

a series of thoughts, sensations, images during REM sleep

REM Rebound

lengthening of REM after periods of sleep deprivation

Patient w/ brain damage could “guess“ the direction of a postcard going into a mailbox without actually registering the movement

ex of blindsight

driving a car while listening to music and conversing w/ passengers

dual processing

low road - unconsciousness in dual processing

fight or flight, quick response

high road - consciousness in dual processing

reframe on feedback and adjusting, reasoning & deductions

multitasking, identifying an object: make, model, color (low or high road)

parallel processing

baking a cake, PEMDAS (high road)

sequential processing

monitor brain waves in sleep on a…

EEG

4 stages of sleep

1. nREM 1: hallucinations, etc (alpha)

2. nREM 2: light sleep (theta) sleep spindles →

3. nREM 3: deep sleep, *delta waves*

4. REM: paradoxical sleep