The Basics
This theory describes all of the ways that a participant can respond to a signal that is present or absent.
What is Signal Detection Theory?
This is the dark, circular opening at the center of the eye.
What is the pupil.
Rods are specialized to help you see during this time of the day.
What is night/night vision.
This lobe of the brain is especially important for vision.
What is the Occipital lobe?
This occurs when sensory receptors change their sensitivity to the stimulus.
What is sensory adaptation?
This is the science of defining quantitative relationships between physical and psychological events.
What is Psychophysics?
This is the light-sensitive membrane at the back of the eye that contains rods and cones
What is the retina.
These photoreceptors do not contribute to color vision
What are rods?
This pathway is considered the where pathway and is important for spatial awareness & body position.
What is the dorsal stream?
People with this type of blindness may still respond to visual stimuli without consciously seeing.
What is blindsight / cortical blindness?
The psychophysical method in which stimuli of varying intensities are presented in ascending and descending orders in discrete steps is called the method of…
What is the method of limits?
The right visual field projects to this half of each eye.
What is the left?
Rods are most highly concentrated in this area of the retina
What is the periphery?
Half of the axons from each eye crossover at this point.
What is the optic chiasm?
The optic tract sends visual information to this part of the thalamus.
What is the lateral geniculate nucleus (LGN)?
A psychophysical technique where a researcher presents a set of different stimulus intensities to a participant in a random order, and asks them to judge whether they perceive the stimulus or not, allowing for a precise measurements.
What is the method of constant stimuli?
This is the name of the area where the optic nerve leaves the eye.
What is the blindspot?
Cones are most highly concentrated in this area of the retina
What is the fovea?
What causes our blind spot. (What is missing!?)
What are photoreceptors?
This structure enables the eye to change focus on objects at different distances.
What is the lens?
This method for testing subjects' perception in stimulus detection and difference detection requires the observer to alter the strength of a stimulus until it matches some criterion
What is the method of adjustment?
This type of mapping is an orderly mapping of the world in the LGN (thalamus) and visual cortex.
What is retinotopic mapping?
Each cone is connected to 1 of these cells, creating high spatial resolution/acuity.
What are retinal ganglion cells?
This is the pathway to the brain starting from the eye.
retina-optic nerve- optic chiasm - optic tract - LGN - optic radiations- primary visual cortex.
This is the perceptual correlate of a wavelength.
What is color?