David Bourget (Western Ontario)
David Chalmers (ANU, NYU)
Rafael De Clercq
Jack Alan Reynolds
Learn more about PhilPapers
Some patients with a lesion to the striate cortex (V1), when assessed through forced-choice paradigms, are able to detect stimuli presented in the blind field, despite reporting a complete lack of visual experience. This phenomenon, known as blindsight, strongly implicates V1 in visual awareness. However, the view that V1 is indispensable for conscious visual perception is challenged by a recent finding that the blindsight subject GY can be aware of visual qualia in his blind field, implying that V1may not be critical under all circumstances. This apparent contradiction raises the following question: if V1 is not always necessary for phenomenal awareness, why do V1 lesions have such a detrimental effect on conscious perception? It is suggested here that this contradiction can be resolved by considering the impact of V1 lesions on the functioning of the whole visual cortex.
|Keywords||blindsight primary visual cortex transcranial magnetic stimulation|
|Categories||categorize this paper)|
Setup an account with your affiliations in order to access resources via your University's proxy server
Configure custom proxy (use this if your affiliation does not provide a proxy)
|Through your library|
References found in this work BETA
No references found.
Citations of this work BETA
Berit Brogaard (2011). Conscious Vision for Action Versus Unconscious Vision for Action? Cognitive Science 35 (6):1076-1104.
Doerthe Seifert, Christine Falter, Hans Strasburger & Mark A. Elliott (2010). Bandpass Characteristics of High-Frequency Sensitivity and Visual Experience in Blindsight. Consciousness and Cognition 19 (1):144-151.
Similar books and articles
Mika Koivisto, Henry Railo & Niina Salminen-Vaparanta (2011). Transcranial Magnetic Stimulation of Early Visual Cortex Interferes with Subjective Visual Awareness and Objective Forced-Choice Performance. Consciousness and Cognition 20 (2):288-298.
Victor A. F. Lamme, H. Landman Super, P. R. R. Roelfsema & H. Spekreijse (2000). The Role of Primary Visual Cortex (V1) in Visual Awareness. Vision Research 40 (10):1507-21.
Juha Silvanto, Alan Cowey, Nilli Lavie & Vincent Walsh (2005). Striate Cortex (V1) Activity Gates Awareness of Motion. Nature Neuroscience 8 (2):143-144.
James Danckert & Yves Rossetti (2005). Blindsight in Action: What Can the Different Sub-Types of Blindsight Tell Us About the Control of Visually Guided Actions? Neuroscience and Biobehavioral Reviews 29 (7):1035-1046.
Paul Azzopardi & Alan Cowey (1998). Blindsight and Visual Awareness. Consciousness and Cognition 7 (3):292-311.
Basileios Kroustallis (2005). Blindsight. Philosophical Psychology 18 (1):31-43.
Morten Overgaard (2011). Visual Experience and Blindsight: A Methodological Review. Experimental Brain Research 209:473-479.
Berit Brogaard (2011). Color Experience in Blindsight? Philosophical Psychology 24 (6):767 - 786.
John R. Skoyles (1997). Another Variety of Vision. Trends in Neurosciences 20 (1):22-23.
Juha Silvanto (2007). Abstract Making the Blindsighted See. Neuropsychologia 45 (14):3346-50.
Added to index2009-01-28
Total downloads162 ( #7,560 of 1,700,235 )
Recent downloads (6 months)24 ( #29,086 of 1,700,235 )
How can I increase my downloads?