Quiz 2 Flashcards
Consciousness
Personal awareness of mental activities, internal sensations, and the external environment
Intentionality
Being directed toward an object
- you have to be thinking about something
- you can’t have a consciousness not thinking about something
One of four basic properties of consciousess
Unity
Resistance to division
- integrating information from the sense to form a whole
One of four basic properties of consciousness
Selectivity
Capacity to include some objects but not others
- dichotic listening
- cocktail party phenomenon
One of four basic properties of consicousness
Transience
Has tendency to change
One of four basic properties of consciousness
James and stream of consciousness
“like a river”
- consciousness allows people to develop sense of personal identity that has continuity over time
- feel like same person as your ten-year-old self
- integrate past, present, and future behavior
How do we judge what is conscious?
- capacity for experiences ( feel pain, pleasure, hunger, etc.)
- capacity for agency ( self-control, planning, memory, thought)
Is AI conscious; Chinese room thought experiment
- ai not experiencing actual emotions
Chinese room
- can machine actually be intellegent?
- boxes of Chinese characters and book of instructions, human can use it to make phrases
- ai can only simulate knowledge
Mind-body problem
- how the mind is related to the brain and body
- david chalmers: “hard problem of consciousness”; how do physical and non-physical things interact?
- descartes: suggested mind has effect on brain via pineal gland
- contemporary: suggest mental events tied to brain events
Experience of the consciousness
Arise from synchronized activity across the brain
- if simulate same brain activity as for example “tennis” will they start thinking about tennis?
Selective attention
Conscious awareness focused on particular stimulus
- can only attend to one thing while ignoring others
Cherry and dichotic listening experiments
- Focused Auditory Attention
- One message is presented to the left ear, another in the right ear
- person can repeat what they heard in left ear, but could not report what was said in other ear
Talking on the phone while driving
Division of attention: we can’t do it
- creates less attention and impairs attention for each task
Switching attentional focus
Conscious and unconscious perception
Capture of attention by salient stimuli
Change blindness
Failure to detect substantial change in visual scene
inattentional blindness
Failure to notice an unexpected but fully visible object when attention is diverted to other aspects of a display
hemispatial neglect
Patient ignores objects in one half of visual field in perception and imagery
blindsight
Respond to visual stimulus without consciously experiencing it or see them
- avoid blocks in hallway without actually being able to see them
- flash shape very briefly so ppl don’t “know” what they saw but can guess correctly what they saw
Two track mind
Unconscious parallel processing
- id and superego
- like elephant that does what it does
Conscious sequential processing
- ego
- reasoning and steer the elephant
automatic processing
Unconscious, efficient, fast
- suffer no capacity limitations
- do not require attention
- very hard to modify once learned
controlled processing
Conscious, demanding, slow
- limited capacity
- require attention
- can be used flexibly in changing circumstances
circadian rhythm
Cycle or rhythm that is roughly 24 hours long
- approx 90 min sleep cycle
external and internal environmental cues for rhythm
Without any environmental time cues, circadian rhythms become desynchronized
- jet lack: out of sync with daylight and darkness cues
- light: light sensitive retinal proteins; suprachiasmatic nucleus that decreases melatonin production
- temperature
- other schedules: exercise, food, social interaction
Awake State
Alert: beta brain waves
Drowsy: Alpha brain waves
N1 sleep
First stage of non-REM (NREM) sleep
Slowed breathing and irregular brain waves
Can experience hallucinations:
Sensory experiences that occur without a sensory stimulus
Hypnagogic sensations: sense of falling, body suddenly jerk
alpha and theta brain waves
N2 sleep
Lasts for about 20 min
Periodic sleep spindles
theta brain waves with delta near the end
Bursts of rapid, rhythmic brain-wave activity that aid memory processing
Can be awakened without too much difficulty, but asleep
N3 sleep
Deep sleep
Slow-wave sleep
Lasts for about 30 min
Delta waves: Large, slow brain waves associated with deep sleep