Enacted Theories of Visual Awareness: A Neuromodelling Analysis

2005 ◽  
pp. 245-257 ◽  
Author(s):  
Igor Aleksander ◽  
Helen Morton
Keyword(s):  
Visual Awareness

Illusory brightness priming occurs without visual awareness

2010 ◽  
Author(s):  
Marjan Persuh ◽  
Tony Ro
Keyword(s):  
Visual Awareness

No impact of affective person knowledge on visual awareness: Evidence from binocular rivalry and continuous flash suppression.

Emotion ◽  
2017 ◽  
Vol 17 (8) ◽  
pp. 1199-1207 ◽  
Author(s):  
Timo Stein ◽  
Caitlyn Grubb ◽  
Maria Bertrand ◽  
Seh Min Suh ◽  
Sara C. Verosky
Keyword(s):  
Binocular Rivalry ◽  
Visual Awareness ◽  
Continuous Flash Suppression

Consensus Building in Collaborative Sequencing with Visual Awareness

2020 ◽  
Author(s):  
Tae Soo Kim ◽  
Sungsoo (Ray) Hong ◽  
Nitesh Goyal ◽  
Jeongyeon Kim ◽  
Juho Kim
Keyword(s):  
Visual Awareness ◽  
Consensus Building

Visual Processing without Awareness: Evidence from Unilateral Neglect

1992 ◽  
Vol 4 (4) ◽  
pp. 345-351 ◽  
Author(s):  
Anna Berti ◽  
Giacomo Rizzolatti
Keyword(s):  
Visual Processing ◽  
Visual Awareness ◽  
Visual Cognition ◽  
Congruent Condition ◽  
Experimental Conditions ◽  
Unilateral Neglect ◽  
Normal Field ◽  
The Third ◽  
Physically Identical ◽  
Physiological Theory

Can visual processing be carried out without visual awareness of the presented objects? In the present study we addressed this problem in patients with severe unilateral neglect. The patients were required to respond as fast as possible to target stimuli (pictures of animals and fruits) presented to the normal field by pressing one of the two keys according to the category of the targets. We then studied the influence of priming stimuli, again pictures of animals or fruits, presented to the neglected field on the responses to targets. By combining different pairs of primes and targets, three different experimental conditions were obtained. In the first condition, "Highly congruent," the target and prime stimuli belonged to the same category and were physically identical; in the second condition, "Congruent," the stimuli represented two elements of the same category but were physically dissimilar; in the third condition, "Noncongruent," the stimuli represented one exemplar from each of the two categories of stimuli. The results showed that the responses were facilitated not only in the Highly congruent condition, but also in the Congruent one. This finding suggests that patients with neglect are able to process stimuli presented to the neglected field to a categorical level of representation even when they deny the stimulus presence in the affected field. The implications of this finding for psychological and physiological theory of neglect and visual cognition are discussed.

Slower access to visual awareness but otherwise intact implicit perception of emotional faces in schizophrenia-spectrum disorders

2021 ◽  
Vol 93 ◽  
pp. 103165
Author(s):  
Joana Grave ◽  
Nuno Madeira ◽  
Maria João Martins ◽  
Samuel Silva ◽  
Sebastian Korb ◽  
...  
Keyword(s):  
Visual Awareness ◽  
Schizophrenia Spectrum Disorders ◽  
Emotional Faces ◽  
Schizophrenia Spectrum ◽  
Spectrum Disorders ◽  
Implicit Perception

scholarly journals Mapping the route to visual awareness

2011 ◽  
Vol 11 (13) ◽  
pp. 4-4 ◽  
Author(s):  
H. Hogendoorn ◽  
T. A. Carlson ◽  
F. A. J. Verstraten
Keyword(s):  
Visual Awareness

scholarly journals Visual awareness of objects and their colour

2011 ◽  
Vol 73 (7) ◽  
pp. 2026-2043 ◽  
Author(s):  
Michael Pilling ◽  
Angus Gellatly
Keyword(s):  
Visual Awareness

scholarly journals Single units and conscious vision

1998 ◽  
Vol 353 (1377) ◽  
pp. 1801-1818 ◽  
Author(s):  
◽  
N. K. Logothetis
Keyword(s):  
Binocular Rivalry ◽  
Neural Activity ◽  
Visual Awareness ◽  
Physiological Data ◽  
Neural Basis ◽  
Binocular Fusion ◽  
Neural Representations ◽  
Multistable Perception ◽  
Visual Areas ◽  
Psychophysical Studies

Figures that can be seen in more than one way are invaluable tools for the study of the neural basis of visual awareness, because such stimuli permit the dissociation of the neural responses that underlie what we perceive at any given time from those forming the sensory representation of a visual pattern. To study the former type of responses, monkeys were subjected to binocular rivalry, and the response of neurons in a number of different visual areas was studied while the animals reported their alternating percepts by pulling levers. Perception–related modulations of neural activity were found to occur to different extents in different cortical visual areas. The cells that were affected by suppression were almost exclusively binocular, and their proportion was found to increase in the higher processing stages of the visual system. The strongest correlations between neural activity and perception were observed in the visual areas of the temporal lobe. A strikingly large number of neurons in the early visual areas remained active during the perceptual suppression of the stimulus, a finding suggesting that conscious visual perception might be mediated by only a subset of the cells exhibiting stimulus selective responses. These physiological findings, together with a number of recent psychophysical studies, offer a new explanation of the phenomenon of binocular rivalry. Indeed, rivalry has long been considered to be closely linked with binocular fusion and stereopsis, and the sequences of dominance and suppression have been viewed as the result of competition between the two monocular channels. The physiological data presented here are incompatible with this interpretation. Rather than reflecting interocular competition, the rivalry is most probably between the two different central neural representations generated by the dichoptically presented stimuli. The mechanisms of rivalry are probably the same as, or very similar to, those underlying multistable perception in general, and further physiological studies might reveal a much about the neural mechanisms of our perceptual organization.

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