Visual Processing and Perception

This set of flashcards covers essential vocabulary related to visual processing, including terminology related to convergence, lateral inhibition, receptive fields, and areas of the brain involved in visual perception.

Convergence

The merging of information from multiple photoreceptors into a single retinal ganglion cell, impacting sensitivity and acuity.

Lateral inhibition

A process where the activation of one neuron inhibits the output of neighboring neurons, enhancing edge detection.

Receptive field

The specific area on the retina to which a particular neuron responds, typically structured as a center-surround field.

Optic chiasm

The part of the visual pathway where the optic nerves partially cross, leading information from each eye to the opposite hemisphere of the brain.

Striate cortex

The region in the occipital lobe where visual information is processed, characterized by complex receptive fields.

Feature detectors

Specialized neurons in the visual system that respond to specific features such as orientation, movement, and corners.

Retinotopic maps

Spatial organization in the LGN and cortex that reflects the arrangement of photoreceptors in the retina.

Cortical magnification

The phenomenon where the fovea is represented with greater detail in the cortex than the periphery of the retina.

Ocular dominance

The tendency for certain neurons in the visual cortex to respond preferentially to input from one eye over the other.

Structural description model

A theory of object recognition suggesting that objects are identified by their components, like shapes called geons.