Brain activity - Chapter 4

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Last updated 6:06 PM on 5/29/26
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29 Terms

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What are all the waves in the brain

  • WHAT

  • WHAT

  • WHAT

  • WHAT

  • WHAT

What are all the waves in the brain

  • Gamma

  • Beta

  • Alpha

  • Theta

  • Delta

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Gamma

Problem-solving, concentration

<p>Problem-solving, concentration </p>
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Beta

Busy, active mind

<p>Busy, active mind </p>
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Alpha

Reflective, restful

<p>Reflective, restful </p>
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Theta

Drowsiness

<p>Drowsiness </p>
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Delta

Sleep, dreaming

<p>Sleep, dreaming </p>
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Conscious mind

  • Normal waking state of consciousness

  • Alertness, concentration, focus, cognition and the five physical senses

  • Beta waves

<ul><li><p>Normal waking state of consciousness</p></li><li><p>Alertness, concentration, focus, cognition and the five physical senses </p></li><li><p>Beta waves </p></li></ul><p></p>
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Gateway to the subconscious mind

  • Deep relaxation and light meditation usually with eyes closed

  • Relaxation, visualization, creativity and super learning

  • Alpha waves

<ul><li><p>Deep relaxation and light meditation usually with eyes closed</p></li><li><p>Relaxation, visualization, creativity and super learning </p></li><li><p>Alpha waves </p></li></ul><p></p>
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Subconscious mind

  • Usually light sleep, including REM dream state

  • Deep meditation, intuition, memory and vivid visual imagery

  • Theta waves

<ul><li><p>Usually light sleep, including REM dream state </p></li><li><p>Deep meditation, intuition, memory and vivid visual imagery </p></li><li><p>Theta waves</p></li></ul><p></p>
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Unconscious or Supra-conscious mind

  • Usually deep sleep, dreamless state

  • Transcendental meditation

  • Automatic self-healing, immune system function

  • Delta waves

<ul><li><p>Usually deep sleep, dreamless state </p></li><li><p>Transcendental meditation </p></li><li><p>Automatic self-healing, immune system function </p></li><li><p>Delta waves </p></li></ul><p></p>
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Pattern of REM sleep is like stage WHAT

Pattern of REM sleep is like stage 1

<p>Pattern of REM sleep is like stage 1 </p>
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Alpha waves

When the eyes are closed and the mind is relaxed

<p>When the eyes are closed and the mind is relaxed</p>
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Theta waves

  • Short bursts of irregular waves.

  • Light sleep

  • Easily be aroused

  • See fantastic images

<ul><li><p>Short bursts of irregular waves.</p></li><li><p>Light sleep</p></li><li><p>Easily be aroused </p></li><li><p>See fantastic images </p></li></ul><p></p>
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Sleep spindles

  • Sudden bursts of rapid brain activity

  • The reason is unknown

<ul><li><p>Sudden bursts of rapid brain activity</p></li><li><p>The reason is unknown </p></li></ul><p></p>
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K-complex

Triggered by abrupt noise

<p>Triggered by abrupt noise </p>
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Delta waves

  • High voltage, regular patterns

  • Slow-wave sleep

  • Hard to wake

  • Less responsive to the surroundings

<ul><li><p>High voltage, regular patterns</p></li><li><p>Slow-wave sleep </p></li><li><p>Hard to wake </p></li><li><p>Less responsive to the surroundings </p></li></ul><p></p>
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REM (rapid eye movement)

  • Alert

  • Awake mind

<ul><li><p>Alert </p></li><li><p>Awake mind </p></li></ul><p></p>
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REM is a mixture of all kinds of WHAT

REM is a mixture of all kinds of WAVES

<p>REM is a mixture of all kinds of WAVES </p>
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A gradual change of wave patterns: Brain waves become WHAT (WHAT in frequency) and WHAT (WHAT in intensity) when sleep deepens

A gradual change of wave patterns: Brain waves become SLOWER (DECREASE in frequency) and LARGER (INCREASE in intensity) when sleep deepens

<p>A gradual change of wave patterns: Brain waves become SLOWER (DECREASE in frequency) and LARGER (INCREASE in intensity) when sleep deepens</p>
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Parents in WHAT sleep (WHAT sleep) can be aroused by a baby’s cries

Parents in SLOW-WAVE sleep (DEEP sleep) can be aroused by a baby’s cries

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Parents can’t hear other sounds that are WHAT but are less relevant than the cries of the baby

Parents can’t hear other sounds that are LOUDER but are less relevant than the cries of the baby

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WHAT sleep mostly at the beginning of the might

DEEP sleep mostly at the beginning of the might

<p>DEEP sleep mostly at the beginning of the might </p>
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WHAT-sleep mostly at the end

REM-sleep mostly at the end

<p>REM-sleep mostly at the end </p>
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Stages of sleep diagram

knowt flashcard image
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REM sleep

  • After about 90 minutes of sleep, the sleep cycle WHAT. This cycle repeats about WHAT times in eight hours

REM sleep

  • After about 90 minutes of sleep, the sleep cycle REVERSES. This cycle repeats about FIVE times in eight hours

<p>REM sleep </p><ul><li><p>After about 90 minutes of sleep, the sleep cycle REVERSES. This cycle repeats about FIVE times in eight hours </p></li></ul><p></p>
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REM sleep

  • The WHAT dart back and forth rapidly beneath closed eyelids

REM sleep

  • The EYES dart back and forth rapidly beneath closed eyelids

<p>REM sleep </p><ul><li><p>The EYES dart back and forth rapidly beneath closed eyelids </p></li></ul><p></p>
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REM stands for WHAT

Rapid eye movement

<p>Rapid eye movement </p>
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REM sleep

  • This stage is also called WHAT: a sleeping body with an WHAT

REM sleep

  • This stage is also called PARADOXICAL SLEEP: a sleeping body with an ACTIVE BRAIN

<p>REM sleep </p><ul><li><p>This stage is also called PARADOXICAL SLEEP: a sleeping body with an ACTIVE BRAIN </p></li></ul><p></p>
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REM sleep

  • Some neurons in the WHAT cortex and the WHAT regions are WHAT active during REM sleep than during active hours

  • WHAT sometimes occurs

  • However, most of the body’s muscles are WHAT

REM sleep

  • Some neurons in the OCCIPITAL cortex and the BRAIN STEM regions are MORE active during REM sleep than during active hours

  • SEXUAL AROUSAL sometimes occurs

  • However, most of the body’s muscles are PARALYZED

<p>REM sleep</p><ul><li><p>Some neurons in the OCCIPITAL cortex and the BRAIN STEM regions are MORE active during REM sleep than during active hours </p></li><li><p>SEXUAL AROUSAL sometimes occurs </p></li><li><p>However, most of the body’s muscles are PARALYZED </p></li></ul><p></p>