Week 11: Sleeping and Consciousness Flashcards
The 3 components of attention are:
- Orienting to sensory stimuli
- Controlling behaviour and the cntents of consciousness
and. ..
Maintaining alertness
What parts of the brain are involved in sleep and waking?
Pons, reticular formation, medulla oblongata
The ‘spotlight of attention’ areas of the brain are…
The prefrontal cortex and the thalamus
the first view of consciousness is the…
Discuss it
Psychodynamic view
-Freud - 3 levels of consciousness
Conscious - mental events of which you are aware
Preconscious - mental events that can be brought into consciousness
Unconscious - mental events we are unaware of
Perception below the threshold of consciousness is called…
subliminal perception
Subliminal perception can influence our…
behaviours and reactions (eg. subliminal advertising)
Or motivational systems can be…
Conscious (explicit) or unconscious (implicit)
The 2nd view of consciousness is the…
Explain it
The Cognitive view
- Information processing operating outside of our consciousness
- consciousness and working memory are used interchangeably
If someone is blindsighted, they have damage to…
The central part if the occipital cortex (tectum/other parts of thalamus)
What is happening when someone is blindsighted?
They are unable to see objects placed before them, but they can provide info about the shape of an object
- Die to a primitive visual system in the brain
Hindbrain and midbrain are important for…
arousal and sleep
Damage to the reticular formation can lead to…
coma
The key area for conscious control of information processing is…
The prefrontal cortex
What does the reticular formation do for us when we sleep?
It turns our attention to stimulus off.
The human body operates on what time loop/cycle?
25 hours
What frequency of beta-waves operate when we are awake?
15-20hz/second
What frequency of beta-waves operate when we are in stage 4 of deep sleep?
1-2hz/second
As we age, the amount of sleep we need…
decreases
What is the psychodynamic view on dreaming?
Dreams reveal our unconscious. Latent content (meaning) is revealed through manifest content (the dream)
What is the cognitive view on dreaming?
Dreams are a way of washing out the daily issues of the dreamer
What is the biological view on dreaming?
Dreams are in response to the random firing of neurons in the brain during sleep.
OR
The consolidation of new material
What are some of the symptoms of insomnia?
tense, depressed, higher body temp, higher metablic rate
What does the reticular formation allow in when we sleep?
Meaningful sounds (different to each individual) eg. crying baby
Attending to 2 tasks at the same time is employing…
divided attention
