PET Studies of Components of High-Level Vision
Abstract
We have now tested twelve subjects in an experiment in which we study how objects are identified when seen from an unusual points of view. As noted in earlier quarterly reports, this study will allow us to test a prediction of Kosslyn, Flynn, Amsterdam and Wang (1990); this theory led us to expect processes in the parietal lobe (involved in shifting attention) and in the frontal lobe (involved in formulating hypotheses) to be invoked when subjects identify pictures of object seen from an unusual point of view but not when objects are seen from canonical points of view. The subjects have participated in three conditions: (1) They see a series of pictures of objects seen from a canonical point of view; (2) they see a series of pictures of objects from an unusual point od view; (3) they see random noise patterns. In all three conditions, the subjects hear a word immediately before each picture is presented. In the first two conditions, they verify whether the word names the picture; in the third (baseline) condition, they simply press a pedal when they hear the word.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 15, 1992
- Accession Number
- ADA246449
Entities
Organizations
- Harvard University