Psycho : Chap 5 ( Conciousness n circadian rythm )

Consciousness and Brain activvity

Operational definition of consciousness by researchers

Reporting awareness of one stimulus and not another

what method can measure brain activity with milisecond accuracy ?

EEG

method that measure brain activity precise in terms of location

fMRI

When someone is conscious of a stimulus, what happens ?

• stimulus activates neurons more strongly

• the activity resonate through other brain areas

According to studies, is consciousness of a stimulus an all-or-none phenomenon?

Yes, it either spreads strongly or not at all

What is the brain's role in unconscious processing of stimuli?

It processes stimuli enough to evaluate their importance

Which theory suggests consciousness is an epiphenomenon?

Epiphenomenal theory ( accidental by product )

How does the brain construct a conscious perception of events?

It constructs perception retroactively

What is a circadian rhythm?

A rhythm of activity and inactivity lasting about a day

Which structure in the brain generates the circadian rhythm of sleep and wakefulness?

Suprachiasmatic nucleus (SCN)

Which type of people tend to wake up easily and do their best work early?

Morning people

Which stage of sleep is characterized by rapid eye movement and fluctuating heart rate?

REM sleep

What is insomnia?

Lack of sleep to feel rested

Which sleep disorder involves sudden attacks of sleepiness during the day?

Narcolepsy

What is sleep apnea?

Failure to breathe for a minute or more during sleep

Latent content dream is

The hidden ideas that the dream represent symbolically

Manifest content dream is

Content appears on the surface ( literal )

what Hypnosis can and cant do

can interfere with Inhibiting pain and posthypnotic suggestion that may help break unwanted habits

cant give strength or superpower. cant improve nor recall memory

What is the main characteristic of hypnosis?

Increased focus and suggestibility

Mediation primarily used for

Inducing a calm, relaxed state

What is a déjà vu experience?

Feeling that an event is uncannily familiar

What reset the body’s internal clock ?

Sunlight

What happens to your circadian rhythm if you fly west?

It shifts later each day

Primary function of sleep

Conserve energy

long, slow waves indicating decreased brain activity?

Slow-wave sleep

sleep spindles happen on which stage

2nd stage

Function of sleep spindles

Storing memory

sleep problem bcz of frequent, involuntary movements of the limbs?

Periodic limb movement disorder

Which sleep disorder is most common among overweight middle-aged men?

Sleep apnea

common recommendation for someone experiencing sleep apnea?

Avoid alcohol before bedtime

Which condition involves a feeling of intense fear and panic during sleep, usually without remembering the dream?

Night terrors