Conscious Vision for Action Versus Unconscious Vision for Action?

Cognitive Science 35 (6):1076-1104 (2011)
David Milner and Melvyn Goodale’s dissociation hypothesis is commonly taken to state that there are two functionally specialized cortical streams of visual processing originating in striate (V1) cortex: a dorsal, action-related “unconscious” stream and a ventral, perception-related “conscious” stream. As Milner and Goodale acknowledge, findings from blindsight studies suggest a more sophisticated picture that replaces the distinction between unconscious vision for action and conscious vision for perception with a tripartite division between unconscious vision for action, conscious vision for perception, and unconscious vision for perception. The combination excluded by the tripartite division is the possibility of conscious vision for action. But are there good grounds for concluding that there is no conscious vision for action? There is now overwhelming evidence that illusions and perceived size can have a significant effect on action (Bruno & Franz, 2009; Dassonville & Bala, 2004; Franz & Gegenfurtner, 2008; McIntosh & Lashley, 2008). There is also suggestive evidence that any sophisticated visual behavior requires collaboration between the two visual streams at every stage of the process (Schenk & McIntosh, 2010). I nonetheless want to make a case for the tripartite division between unconscious vision for action, conscious vision for perception, and unconscious vision for perception. My aim here is not to refute the evidence showing that conscious vision can affect action but rather to argue (a) that we cannot gain cognitive access to action-guiding dorsal stream representations, and (b) that these representations do not correlate with phenomenal consciousness. This vindicates the semi-conservative view that the dissociation hypothesis is best understood as a tripartite division
Keywords Blindsight  Dorsal stream  Unconscious vision  Consciousness  Ventral stream  Perception  Enactive theory of perception  Vision for perception  Shape processing  Vision for action  Color processing
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DOI 10.1111/j.1551-6709.2011.01171.x
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References found in this work BETA
Action in Perception.Alva Noë - 2005 - MIT Press.
On a Confusion About a Function of Consciousness.Ned Block - 1995 - Brain and Behavioral Sciences 18 (2):227-–247.

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Citations of this work BETA
Conscious Control Over Action.Joshua Shepherd - 2015 - Mind and Language 30 (3):320-344.
Non-Visual Consciousness and Visual Images in Blindsight.Berit Brogaard - 2012 - Consciousness and Cognition 21 (1):595-596.
Conscious Action/Zombie Action.Joshua Shepherd - 2016 - Noûs 50 (2):419-444.
Perceptual Phenomenology.Bence Nanay - 2012 - Philosophical Perspectives 26 (1):235-246.

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