Chapter 4 Flashcards
synesthesia 126
one sense is evoked by another -
transduction 127
many sensors in the body send signals to the CNS
psychophysics 129
measuring strengths of a stimulus and the observer’s sensitivity to that stimulus
absolute threshold 129
The minimal intensity needed to just barely detect a stimulus
just noticeable difference 130
a small change in a stimulus can hardly be detected
Weber’s Law 130
The jnd is always the same proportion
signal detection theory 131
a person’s response varies on the person’s sensitivity to the stimulus in the presence of noise
sensory adaptation 133
go outside, cant see at frist, body adapts
visual acuity 134
The ability to see fine detail
retina 135
light sensitive tissue at the back of the eye
accommodation 135
the process that the eye maintains a clear image
cones 136
Photoreceptors that detect color during day
rods 136
photoreceptors that we use at night
fovea 136
part of retina where the vision is the clearest
receptive field 138
a region of the sensory surface that causes a change in firing rate of that neuron
trichromatic color representation 140
The pattern of responding across the 3 types of cones that provides a unique code for each color
color-opponent system 141
pairs of visual neurons that work in opposition
area V1 141
The part of the optic lobe that contains the primary visual cortex
visual-form agnosia 143
The inability to recognize objects by sight
binding problem 145
how objects are linked together in out vision so we dont just see blobs of color
illusory conjunction 145
a perceptual mistake where features are incorrectly combined
feature integration theory 145
you dont need to focus to detect a stimulus but is required to bind them
perceptual constancy 148
even though other things may change, perception remains the same
template 150
“a memory” a picture in your retinal image
