PSYCO104 Lecture Notes - Lecture 4: Delta Wave, Theta Wave, Sleep Spindle

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4 Dec 2016

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Writing Prompts
If you are stuck writing, consider using the following words as prompts to help you know what
to write about:
studying behavior scientifically
- independent and dependent variables
- correlation
- skepticism
- confounds
- ethics
biological foundations
- the action potential
- the nervous system
- neural plasticity
- the somatosensory cortex
- neurotransmitters
Consciousness Chapter 6:
- Qualia: The 'what it is like' character of mental states. The way it feels to have mental
states such as pain, seeing red, smelling a rose, etc.
- controlled vs automatic processing
Controlled processing; the voluntary use of a attention & conscious effort
Automatic processing; performed with little or no conscious effort
- stages of sleep
Stage 1; “transition period b/w wakefulness & sleep = light stage, brain produces
high amplitude of theta waves = slow brain waves, last 5-10 min, sudden body
jerk feeling
Stage 2; about 20min, brain produces bursts of rapid rhythmic brain waves
activity known as sleep spindles = you are asleep, muscles are more relaxed your
breathing & heart rate are lower & are harder to awaken.
Stage 3: beginning of a very deep, slow brain waves known as delta waves,
people less responsive, when the delta waves dominant EEG pattern = Stage 4
Stage 3 &4; = slow-wave sleep, body relaxed, decreased brain activity & hard to
waken, 20-30min of stage 4, EEG pattern changes as you go “back through” stage
CYCLE OF 1-2-3-4-3-2
- sleep deprivation
short-term total sleep deprivation = 45h without sleep
long-term total sleep deprivation = more than 45h without sleep
partial deprivation = <5h/night for atleast 2 consecutive days
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