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Visual consciousness in health and disease.
- Source :
-
Neurologic clinics [Neurol Clin] 2003 Aug; Vol. 21 (3), pp. 647-86, vi. - Publication Year :
- 2003
-
Abstract
- Conscious experience is an essential part of normal human life and interaction with the environment. Yet the nature of consciousness and conscious perception remains a mystery. Because of its subjective nature, consciousness has been difficult to investigate scientifically, but clues have been gained through studies involving patients with cortical lesions. During the past decade, the development of event-related fMRI has provided insights into aspects of conscious perception in control subjects and patients with cortical lesions by correlating awareness and performance with neural activity during visual tasks. This article reviews how recent research has advanced understanding of conscious perception, its relationship to neural activity and visual performance, and how this relationship can be altered by visual dysfunction. It also presents recent research about how conscious awareness of vision might be represented at a neural level in the central nervous system.
- Subjects :
- Attention physiology
Awareness physiology
Corpus Callosum surgery
Dyslexia physiopathology
Functional Laterality physiology
Humans
Magnetic Resonance Imaging methods
Optical Illusions
Parietal Lobe blood supply
Pattern Recognition, Visual physiology
Perceptual Disorders physiopathology
Perceptual Masking physiology
Prefrontal Cortex blood supply
Prosopagnosia physiopathology
Time Factors
Unconscious, Psychology
Vocabulary
Consciousness physiology
Health Status
Visual Perception physiology
Subjects
Details
- Language :
- English
- ISSN :
- 0733-8619
- Volume :
- 21
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Neurologic clinics
- Publication Type :
- Academic Journal
- Accession number :
- 13677817
- Full Text :
- https://doi.org/10.1016/s0733-8619(02)00122-6