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topographic organization

the arrangement of components in a structure, particularly the orderly spatial relationship between the distribution of neural receptors in an area of the body and a related distribution of neurons representing the same functions in cortical sensory regions of the brain. Thus, the motor cortex shows somatotopic organization, the primary visual cortex shows a topographic mapping of the retina (see retinotopic map), and the auditory system shows tonotopic organization.

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Psychology term of the day

October 9th 2024

Renpenning syndrome

Renpenning syndrome

a condition that is inherited as an X-linked trait (see sex-linked) and almost exclusively affects males. It is characterized by eye defects, microcephaly, psychomotor retardation, short stature, small testes, and intellectual disability. [Hans Renpenning (1929–2006), Canadian physician]