Accession Number : ADA299549

Title :   Final Technical Report for Grant N00014-90-J-1070, 1 October 1989-30 September 1992.

Descriptive Note : Final technical rept.,

Corporate Author : ROCHESTER UNIV NY

Personal Author(s) : Maunsell, John H.

PDF Url : ADA299549

Report Date : 30 SEP 1992

Pagination or Media Count : 7

Abstract : The work in this project was directed at trying to understand the brain mechanisms that subserve higher visual functions. The approach used involved examining the activity of neurons in the brains of nonhuman primates while they are performing visual tasks that they have been trained to do. One of our primary interests is how populations of neurons create representations that support short term visual memories. To examine this question, we trained monkeys to perform matching tasks in which they are shown visual stimuli that they must remember for short periods. We have found that many neurons in visual cerebral cortex are selectively activated during periods when the animal is keeping a particular stimulus in mind. The activity of these neurons is likely to provide the basis for short term memories, and understanding the origin of this activity and its interactions with sensory signals will be an important step in understanding how the brain implements higher functions such as visual search.

Descriptors :   *MEMORY(PSYCHOLOGY), *NERVE CELLS, *VISUAL PERCEPTION, *SENSES(PHYSIOLOGY), *VISUAL CORTEX, *CEREBRAL CORTEX, FUNCTIONS, BRAIN, TRAINING, POPULATION, SIGNALS, SEARCHING, ANIMALS, VISION, STIMULI, PRIMATES, MONKEYS.

Subject Categories : Anatomy and Physiology
      Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE