Top-down projections to the primary visual areas necessary for object recognition: A case study

Research output: Contribution to journalArticle

Abstract

We present a patient, who, following a right posterior ischemia, showed a selective deficit in visually recognising pictures, objects and faces. She was able to read and comprehend any kind of written material and could recognise letters and numbers. Her inability to recognise pictures did not arise from a deficit at the structural description level and/or from a poor semantic knowledge of the stimuli. We argue that her recognition deficit arose from an inability in combining the different elements of the visual stimuli in an unitary percept. Results are discussed in terms of dissociations between local versus global processing, as well as bottom-up versus top-down mechanisms.

Original languageEnglish
Pages (from-to)1074-1085
Number of pages12
JournalVision Research
Volume50
Issue number11
DOIs
Publication statusPublished - Jun 2010

Keywords

  • Global versus local processing
  • Object recognition
  • Top-down versus bottom-up processes
  • Visual agnosia

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems

Fingerprint Dive into the research topics of 'Top-down projections to the primary visual areas necessary for object recognition: A case study'. Together they form a unique fingerprint.

  • Cite this