A TMS study of the ventral projections from V1 with implications for the finding of neural correlates of consciousness.
M. Overgaard, J. Nielsen, A. Fuglsang-Frederiksen
Brain and Cognition February 1, 2004 DOI: 10.1016/s0278-2626(03)00260-4 via Semantic Scholar
Summary
AI-generated from the abstractVisual stimuli presented very briefly produce little or no subliminal perception in healthy individuals. When transcranial magnetic stimulation is applied, a dissociation emerges between correct performance and conscious awareness. The findings support the hypothesis that the ventral projection streams from area V1 are necessary for visual consciousness.
Study at a glance
| Characteristics | Experiment Peer reviewed |
|---|---|
| Intervention | Transcranial magnetic stimulation |
| Keywords | Psychology Medicine Biology |
| Key finding | The ventral projection streams from V1 are necessary for visual consciousness. |
Abstract
The study of subliminal perception in normal and brain lesioned subjects has long been of interest to scholars studying the neural mechanisms behind conscious vision. Using brief durations and a developed methodology of introspective reporting, we present an experiment with visual stimuli that gives rise to little or no subliminal perception under normal viewing conditions. Coupled with transcranial magnetic stimulation, however, we find a dissociation between correctness and conscious awareness. Furthermore, we find support for the hypothesis that the ventral projection streams from V1 are necessary for visual consciousness.