scholarly journals Neural representation of 3-dimensional shape primitives in monkey visual cortex

2010 ◽  
Vol 1 (3) ◽  
pp. 273-273 ◽  
Author(s):  
F. T. Qiu ◽  
K. Endo ◽  
R. Heydt
Keyword(s):  
Visual Cortex ◽  
Neural Representation ◽  
3 Dimensional ◽  
Dimensional Shape ◽  
Monkey Visual Cortex

Study on 3-Dimensional Shape Measurement of Glossy Curved Objects

2003 ◽  
Vol 87 (Appendix) ◽  
pp. 211-212
Author(s):  
Hiroki Shinoda ◽  
Naotaka Ikemoto ◽  
Minoru Isomura
Keyword(s):  
Shape Measurement ◽  
3 Dimensional ◽  
Dimensional Shape ◽  
Curved Objects

Orientation anisotropy in monkey visual cortex

1978 ◽  
Vol 149 (1) ◽  
pp. 229-234 ◽  
Author(s):  
R.J.W. Mansfield ◽  
S.F. Ronner]
Keyword(s):  
Visual Cortex ◽  
Orientation Anisotropy ◽  
Monkey Visual Cortex

scholarly journals The Neural Codes Underlying Internally Generated Representations in Visual Working Memory

2021 ◽  
pp. 1-16
Author(s):  
Qing Yu ◽  
Bradley R. Postle
Keyword(s):  
Working Memory ◽  
Visual Cortex ◽  
Visual Working Memory ◽  
Subjective Experience ◽  
Neural Representation ◽  
Delayed Recall ◽  
Early Visual Cortex ◽  
Memory Representations ◽  
Internal Sources ◽  
Scaling Analyses

Abstract Humans can construct rich subjective experience even when no information is available in the external world. Here, we investigated the neural representation of purely internally generated stimulus-like information during visual working memory. Participants performed delayed recall of oriented gratings embedded in noise with varying contrast during fMRI scanning. Their trialwise behavioral responses provided an estimate of their mental representation of the to-be-reported orientation. We used multivariate inverted encoding models to reconstruct the neural representations of orientation in reference to the response. We found that response orientation could be successfully reconstructed from activity in early visual cortex, even on 0% contrast trials when no orientation information was actually presented, suggesting the existence of a purely internally generated neural code in early visual cortex. In addition, cross-generalization and multidimensional scaling analyses demonstrated that information derived from internal sources was represented differently from typical working memory representations, which receive influences from both external and internal sources. Similar results were also observed in intraparietal sulcus, with slightly different cross-generalization patterns. These results suggest a potential mechanism for how externally driven and internally generated information is maintained in working memory.

scholarly journals The coding of uniform colour figures in monkey visual cortex

2003 ◽  
Vol 548 (2) ◽  
pp. 593-613 ◽  
Author(s):  
H. S Friedman ◽  
H. Zhou ◽  
R. von der Heydt
Keyword(s):  
Visual Cortex ◽  
Monkey Visual Cortex
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