Representation of slowly and rapidly adapting cutaneous mechanoreceptors of the hand in Brodmann's areas 3 and 1 of Macaca mulatta

Abstract:

Brodmann's areas 3 and 1 of the hand area of the classical somatosensory cortex (S I) of Macaca mulatta were systematically mapped in 0.5 mm steps using a microelectrode multiunit recording technique. The data obtained revealed that:(1) The hand is totally represented in each of these two areas. (2) There is a segregation of receptor input to these areas as originally described by Powell and Mountcastle in 1959. (3) There is, in addition, a segregation of input from slowly adapting skin mechanoreceptors to cytoarchitectural area 3. The possible significance of re-representation of the hand in the postcentral gyrus is discussed in relation to the functional specialization of these cytoarchitectonic divisions.

Año de publicación:

1972

Keywords:

Fuente:

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