Early visual processing deficits in schizophrenia: impaired P1 generation revealed by high-density electrical mapping

Neuroreport ◽  
2001 ◽  
Vol 12 (17) ◽  
pp. 3815-3820 ◽  
Author(s):  
John J. Foxe ◽  
Glen M. Doniger ◽  
Daniel C. Javitt
Keyword(s):  
Visual Processing ◽  
High Density ◽  
Early Visual Processing ◽  
Electrical Mapping ◽  
Processing Deficits

scholarly journals Very high density EEG elucidates spatiotemporal aspects of early visual processing

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Amanda K. Robinson ◽  
Praveen Venkatesh ◽  
Matthew J. Boring ◽  
Michael J. Tarr ◽  
Pulkit Grover ◽  
...  
Keyword(s):  
Visual Processing ◽  
High Density ◽  
Early Visual Processing ◽  
Very High

scholarly journals Early Visual Processing Deficits in Dysbindin-Associated Schizophrenia

2008 ◽  
Vol 63 (5) ◽  
pp. 484-489 ◽  
Author(s):  
Gary Donohoe ◽  
Derek W. Morris ◽  
Pierfilippo De Sanctis ◽  
Elena Magno ◽  
Jennifer L. Montesi ◽  
...  
Keyword(s):  
Visual Processing ◽  
Early Visual Processing ◽  
Processing Deficits

scholarly journals Directional selectivity and its use in early visual processing

1981 ◽  
Vol 211 (1183) ◽  
pp. 151-180 ◽  
Keyword(s):  
Visual Processing ◽  
Visual Motion ◽  
Time Derivative ◽  
Receptive Fields ◽  
Specific Model ◽  
Zero Crossings ◽  
Second Stage ◽  
Early Visual Processing ◽  
Local Direction ◽  
Zero Values

The construction of directionally selective units, and their use in the processing of visual motion, are considered. The zero crossings of ∇ 2 G(x, y) ∗ I(x, y) are located, as in Marr & Hildreth (1980). That is, the image is filtered through centre-surround receptive fields, and the zero values in the output are found. In addition, the time derivative ∂[∇ 2 G(x, y) ∗ l(x, y) ]/∂ t is measured at the zero crossings, and serves to constrain the local direction of motion to within 180°. The direction of motion can be determined in a second stage, for example by combining the local constraints. The second part of the paper suggests a specific model of the information processing by the X and Y cells of the retina and lateral geniculate nucleus, and certain classes of cortical simple cells. A number of psychophysical and neurophysiological predictions are derived from the theory.

scholarly journals Wide-Field Feedback Neurons Dynamically Tune Early Visual Processing

Neuron ◽  
2014 ◽  
Vol 82 (4) ◽  
pp. 887-895 ◽  
Author(s):  
John C. Tuthill ◽  
Aljoscha Nern ◽  
Gerald M. Rubin ◽  
Michael B. Reiser
Keyword(s):  
Visual Processing ◽  
Wide Field ◽  
Early Visual Processing
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