Accession Number:

AD0683606

Title:

PERCEPTUAL SPACE OF ORGANISMS AND AUTOMATA.

Descriptive Note:

Rept. no. 8 (Final) 1 Oct 66-31 Dec 68,

Corporate Author:

PITTSBURGH UNIV PA DEPT OF PHARMACOLOGY

Report Date:

1968-12-31

Pagination or Media Count:

26.0

Abstract:

A detailed study of the organization of the neural pathways transmitting tactile and kinesthetic signals from the body periphery to the somatic sensory area I in the cerebral cortex of primates identified certain patterns of receptive fields in the body periphery, and of neurons in the cerebral cortex, which have the attributes of open sets of elements and form topologies. The mapping between the body periphery and its cortical image is shown to be a homeomorphism. In addition, the cortical map has properties which characterize it as a non-orientable surface. The continuity of the mapping from cortex to body periphery and the topology of the latter insure the existence of a lifting function capable of generating the cortical image that corresponds to a peripheral stimulus configuration. The implication is that the tactile-kinesthetic body representation in the cerebral cortex possesses properties which are not inherent in the raw data originating from the peripheral sense organs themselves and that continuity and three-dimensionality of the space of haptic perception is a consequence of the characteristics of the neural mapping process which links body periphery and central sensory representation. The operational principles that underlie certain sensory representations in organisms suggest ways of designing automata with comparable environmental sensing capabilities. Author

Subject Categories:

  • Anatomy and Physiology
  • Bionics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE