Chapters 3, 4 & 6 Flashcards
Studies the steps involved in forming a visual image
Cognitive Science Approach
First to cause an action potential
Ganglion Cell Response
Temporal lob association are damaged
Prosopagnosia
Parts all working at same time, put together to make picture (color, movement, form, distance)
Parallel Processing
Top Down Processing
Mind adds something to sensations to determine what we see
Gestalt Psychologists
The process of detecting environmental stimuli or stimuli arising from the body
Sensation
The process of organizing and interpreting sensory information
Perception
The translation of incoming sensory information into neural signals
Transduction
Changes electromagnetic energy into electrochemical energy (rods and cones)
Transduction
The tendency to pay less attention to a non changing source of stimulation
Sensory Adaption
Perception based on building simple input into more complex perceptions
Bottom-Up Processing
Color, Movement, Location
Dorsal Stream
Objects and People
Ventral Stream
A perceptual process in which memory and other cognitive processes are required for interpreting incoming sensory information
Top-Down Processing
The study of relationships between the physical qualities of stimuli and the subjective responses they produce
Psychophysics
Allows us to establish the limits of awareness (thresholds) for each of our sensory system
Psychophysics
The smallest amount of stimulus that can be detected
Absolute Threshold
The smallest detectable different between two stimuli
Difference Threshold
The analysis of sensory and decision making processes in the detection of faint, uncertain stimuli
Signal Detection
The sense that allows us to process reflected light
Vision
The clear surface at the front of the eye that begins the processes of directing light to the retina
Cornea
An opening formed by the iris
Pupil
The brightly color circular muscle surrounding the pupil of the eye
Iris
Adjusts the opening of the pupil in response to the amount of light present in the environment and to signals from the ANS
Iris
The clear structure behind the pupil that bends light toward the retina
Adjust our focus to see near or distant objects
Lens
Layers of visual processing cells in the back of the eye
Retina
Contains rods and cones that transduce light
Retina
An area of the retina that is specialized for highly detail vision (very fine detail of central vision)
Fovea
A photoreceptor specialized to detect dim light
Sensitive to light
Rods
Peripheral vision does a better job viewing dim light than central vision because of these
Rods
A photoreceptor in the retina that processes color
Function best under bright light
Provides ability to see sharp images and color
Cones
The nerve exiting the retina of the eye
Optic Nerve
Nerve pathways traveling from the optic chasm to the thalamus, hypothalamus, and midbrain
Optic Tracts
A theory of color vision based on the existence of different types of cones for the detection of short, medium and long wavelengths
Trichromacy Theory
Short Wavelengths
Blue Cones
Medium Wavelengths
Green Cones
Long Wavelengths
Red Cones
A theory of color vision that suggests we have a red-green color channel and a blue-yellow color channel in which activation of one color in each pair inhibits the other
Opponent Process Theory
A hypothetical cell that resounds to only one specific visual stimulus
Feature Detector
The ability to use the two-dimensional image projected on the retina to perceive three dimensions
Depth Perception
A depth cue that requires the use of only one eye
Monocular Cue
A depth cue that requires the use of both eyes
Retinal disparity, fused to provide stereopsis
Binocular Cue
The difference between the images projected onto each eye (each eye receives a slightly different view)
Retinal Disparity
Knowing or being aware of ongoing experiences occurring both internally and in the world around us
Consciousness
Involves consciousness
Explicit
Doesn’t involve direct conscious awareness
Implicit
Ever changing
Selective
Directs our activities
Conscious when reticular formation is active
Consciousness
Night Terrors
Sleep Walking
Slow Wave Sleep Disorders
Narcolepsy
Cataplexy
REM w/o atonia
REM Sleep Disorders
Part of consciousness
Interact w/ world while we’re aware of another
Divided Attention
Loss of memory for traumatic events
Psychogenic Amnesia
People disappear w/ no memory of previous life
Fugue States
Multiple personalities
Identity Disorders
The special understanding of the self as distinct from other stimuli (baby looking at self in mirror, etc)
Self Awareness
Coined the term ‘Stream of Consciousness’ to capture the moving, seemingly unbroken flow of conscious awareness
William James
________ & _______ have been described as ‘enabling’ consciousness, but they do not produce its content
Thalamus and Reticular Formation
How to explain how the brain forms a unified whole out of large quantities of information
Binding Problem
A normal state of consciousness characterized by alertness and awareness of external stimuli
Sleep
A normal state of consciousness characterized by alertness and awareness of external stimuli
Wakefulness
A daily biological rhythm
Circadian Rhythm
An internal mechanism that provides an approximate schedule for a wide variety of physical processes
Controlled by hypothalamus
Biological Clock
A mood disorder in which depression occurs regularly at the same time each year, usually during winter months
Seasonal Affective Disorder (SAD)
A waveform recorded by EEG that usually indicates alert wakefulness
Beta Wave
A waveform recorded by EEG that usually indicates relaxed wakefulness
Alpha Wave
The component of sleep characterized by waveforms resembling wakefulness as measured by EEG accompanied by rapid eye movements, muscular paralysis and ANS activation
Rapid Eye Movement Sleep (REM)
The components of sleep characterized by theta and delta wave activity as recorded by EEG and deep physical relaxation
Non-Rapid Eye Movement (N-REM)
A waveform recorded by EEG that is characterized of lighter stages of N-REM sleep
Theta Wave
A waveform recorded by EEG that usually indicates very deep N-REM sleep
Delta Wave
A mental state that usually occurs during sleep that features visual imagery
Dreaming
What appears in dreams
Manifest Content
What dreams mean
Latent Content
During REM sleep, deep brain structures stimulate cortical areas
Activation-Synthesis Hypothesis
A conscious awareness of dreaming accompanied by the ability to control the content of the dream
Lucid Dreaming
A sleep disorder occurring in N-REM sleep in which the sleeper wakes suddenly in great distress, but without experiencing the imagery of a nightmare
Night Terrors
A sleep disorder characterized by an inability to either initiate or maintain normal sleep
Insomnia
Lying in bed for a long period of time without being able to go to sleep (caused by stress and anxiety)
Onset Insomnia
Sleep is frequently interrupted or early waking occurs (caused by stress, substance use, psychological disorders)
Maintenance Insomnia
A sleep disorder characterized by the intrusion of REM phenomena into wakefulness
Instigated by strong emotions
Narcolepsy
Occurs when the muscle paralysis normally associated with REM sleep occurs during wakefulness without any loss of consciousness
Cataplexy
A sleep disorder in which the person stops breathing while sleep
Sleep Apnea