retinotopy
Pronunciation: ret-in-oh-toh-pee
The ordered spatial mapping of visual field locations onto neural tissue, particularly in visual cortex.
Full Definition
Retinotopy refers to the systematic spatial organization of visual information as it is mapped from the retina through various levels of the visual system, culminating in the visual cortex. In neuroinformatics, retinotopic mapping studies use specialized stimuli and fMRI to characterize how different locations in the visual field correspond to specific regions of cortical tissue. This mapping follows precise geometric principles, with neighboring points in visual space activating neighboring regions of cortical tissue. Retinotopic analysis is crucial for understanding visual system organization, identifying visual areas, and studying visual field defects in clinical populations. The technique requires sophisticated stimulus presentation and analysis methods to accurately map the visual field representation.
Usage
Usage note: Related terms include retinotopic (adjective) and retinotopically (adverb).
In Context
- "Phase-encoded retinotopy experiments revealed clear polar angle maps in early visual areas." — Visual neuroscience study
- "The patient's stroke disrupted normal retinotopy in the damaged hemisphere." — Clinical assessment report