Consciousness, Attention & Sleep (W23)
- Created by: HannahSusanRussell
- Created on: 25-04-20 17:16
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- Consciousness, attention & sleep
- Neurobiology: Consciousness arises from neural activity of the brain.
- Consciousness and brain damage
- EG: Anterograde amnesia remain unaware that they are learning.
- Crick: Consciousness is the result of neural assembly. Oscillations in the cortex form consciousness.
- Penrose: Consciousness is a form of non- algorithmic processing.
- Hameroff : Anaesthesia challenges the neural correlation of consciousness. Blocks activity of the thalamus, determining unconsciousness.
- Consciousness and brain damage
- Cognitive theories
- Boar: Consciousness is contained in a central processor called a global workspace.
- Dennett: Consciousness is all or nothing. Its an activation of a collection of sensory infomation.
- Shanon: Being, awareness and reflection.
- Selective attention
- Dichotic Listening - listen to 2 models simultaneously.
- Shadow the message presented to one ear - shadowing would ensure prominence in attention.
- Cocktail-Party phenomenon: you can hear your conversation despite other noises and conversations in the room.
- Background noise: we exclude (less conscious) of auditory information that is not directly necessary.
- Models of selective attention
- Early selection- if items are not attended to they are not selected for neural analysis and play no further part in processing info.
- Late selection: all information is attended to and only later is selected into relevant and not.
- Visual infomation
- Inattentional blindness: do not notice changes in visual stimulus if paying attention elsewhere.
- Divided attention: attention can be split to take in all necessary stimulus at one time.
- Early selection- if items are not attended to they are not selected for neural analysis and play no further part in processing info.
- Dichotic Listening - listen to 2 models simultaneously.
- Hypnosis
- Move through various channels of consciousness through verbal suggestions.
- Post hypnotic suggestibility:following instructions in hypnosis.
- Post hypnotic amnesia: once leaving the hypnotic state, they do not remember what has occurred.
- Barber: participating in vicarious narrative
- Efficacy of hypnotic analgesia is via partitioning attention and the role of the anterior brain
- Sleep is a state of altered consciousness
- 5 Sleep stages
- Dreaming
- REM sleep allows you to remember your dream, others are less conscious
- Levels of consciousness
- Sleep is a state of altered consciousness
- 5 Sleep stages
- Dreaming
- REM sleep allows you to remember your dream, others are less conscious
- Levels of consciousness
- Levels of consciousness
- REM sleep allows you to remember your dream, others are less conscious
- Sleep is a state of altered consciousness
- Levels of consciousness
- REM sleep allows you to remember your dream, others are less conscious
- Implicit Memory : memory that cannot be described verbally and of which the person is not aware
- Neurobiology: Consciousness arises from neural activity of the brain.
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