Cited by 246Visual perception and processing mechanismsFace Recognition and PerceptionPhilosophy and Theoretical Science

Striate cortex (V1) activity gates awareness of motion

Silvanto, Juha, Cowey, Alan, Lavie, Nilli, Walsh, Vincent·2005·Nature Neuroscience

Abstract

A key question in understanding visual awareness is whether any single cortical area is indispensable. In a transcranial magnetic stimulation experiment, we show that observers' awareness of activity in extrastriate area V5 depends on the amount of activity in striate cortex (V1). From the timing and pattern of effects, we infer that back-projections from extrastriate cortex influence information content in V1, but it is V1 that determines whether that information reaches awareness.

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Crossref · 10.1038/nn1379

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  • Noncognitivist theories of consciousness should generally predict no changes in ongoing perceptual experience following PFC stimulation, except to the extent that PFC activation affects arousal level or other enabling conditions of conscious experience.

    “Noncognitivist theories of consciousness (e.g., recurrent activation theories) (Silvanto et al., 2005;Lamme, 2014;Billeke et al., 2017) should generally predict no changes in ongoing perceptual experience following PFC stimulation, except to the extent that PFC activation affects arousal level or other enabling conditions of conscious experience.”
  • First-order recurrent activation theories argue that the PFC is neither necessary nor sufficient for consciousness, but rather that conscious contents are determined locally in sensory systems.

    “These theorists argue that the PFC is neither necessary nor sufficient for consciousness, but rather that conscious contents are determined locally in sensory systems.”

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Authors
Silvanto, J., Cowey, A., Lavie, N., & Walsh, V.
Affiliations
  • University College London (GB)
  • University of Oxford (GB)
Corresponding author
Silvanto, Juha
Venue
Nature Neuroscience
Published
2005-01-09
Volume
8
Issue
2
Pages
143-144
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W2069666889
Cited by
246
References
14
Citations by year
2025: 6 · 2024: 28 · 2023: 25 · 2022: 3 · 2021: 13 · 2020: 11 · 2019: 3 · 2018: 8 · 2017: 9 · 2016: 11 · 2015: 10 · 2014: 14 · 2013: 8 · 2012: 14
FWCI
6.60
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Face Recognition and Perception
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Philosophy and Theoretical Science
Keywords
visual awareness, primary visual cortex, area V1, motion perception, transcranial magnetic stimulation, back-projection, visual cortex
MeSH terms
Awareness, Brain Mapping, Electric Stimulation, Humans, Magnetics, Motion, Motion Perception, Phosphenes, Visual Cortex

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