scholarly journals Spatial and temporal hemodynamic study of human primary visual cortex using simultaneous functional MRI and diffuse optical tomography

2005 ◽  
Author(s):  
Xiaofeng Zhang ◽  
V.Y. Toronov ◽  
A.G. Webb
Keyword(s):  
Visual Cortex ◽  
Functional Mri ◽  
Primary Visual Cortex ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
Hemodynamic Study

scholarly journals Retinotopic mapping of adult human visual cortex with high-density diffuse optical tomography

2007 ◽  
Vol 104 (29) ◽  
pp. 12169-12174 ◽  
Author(s):  
B. W. Zeff ◽  
B. R. White ◽  
H. Dehghani ◽  
B. L. Schlaggar ◽  
J. P. Culver
Keyword(s):  
Visual Cortex ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
High Density ◽  
Human Visual Cortex ◽  
Retinotopic Mapping ◽  
Adult Human

Increasing mean airway pressure reduces functional MRI (fMRI) signal in the primary visual cortex

2001 ◽  
Vol 19 (1) ◽  
pp. 7-11 ◽  
Author(s):  
Ingo H. Lorenz ◽  
Christian Kolbitsch ◽  
Christoph Hörmann ◽  
Michael Schocke ◽  
Christian Kremser ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Functional Mri ◽  
Primary Visual Cortex ◽  
Airway Pressure ◽  
Mean Airway Pressure ◽  
Fmri Signal

scholarly journals Shape Processing Area LO and Illusory Contours

Perception ◽  
10.1068/p6388 ◽  
2009 ◽  
Vol 38 (8) ◽  
pp. 1260-1263 ◽  
Author(s):  
Lee H de-Wit ◽  
Robert W Kentridge ◽  
A David Milner
Keyword(s):  
Visual Cortex ◽  
Functional Mri ◽  
Primary Visual Cortex ◽  
Visual Illusions ◽  
Visual Area ◽  
Illusory Contours ◽  
Feedback Effects ◽  
Shape Representations ◽  
Shape Processing

Recent functional MRI has demonstrated that illusory contours can activate the primary visual cortex. Our investigation sought to demonstrate whether this correlation reflects computations performed in the primary visual cortex or feedback effects from shape processing area LO. We explored this in a patient who has a bilateral lesion to LO, but a functionally spared V1. Our data indicate that illusory contours are unable to influence behaviour without visual area LO. Whilst we would not claim that our data provide evidence for the ‘cognitive’ nature of illusory contours, they certainly suggest that illusory contours are dependent upon the computations involved in extracting shape representations in LO. Our data highlight the importance of neuropsychological research in interpreting the role of feedforward and feedback effects in the generation of visual illusions.

scholarly journals Functional MRI reveals spatially specific attentional modulation in human primary visual cortex

1999 ◽  
Vol 96 (4) ◽  
pp. 1663-1668 ◽  
Author(s):  
D. C. Somers ◽  
A. M. Dale ◽  
A. E. Seiffert ◽  
R. B. H. Tootell
Keyword(s):  
Visual Cortex ◽  
Functional Mri ◽  
Primary Visual Cortex ◽  
Attentional Modulation

scholarly journals Evaluating a new generation of wearable high-density diffuse optical tomography technology via retinotopic mapping of the adult visual cortex

2021 ◽  
Vol 8 (02) ◽  
Author(s):  
Ernesto E. Vidal-Rosas ◽  
Hubin Zhao ◽  
Reuben W. Nixon-Hill ◽  
Greg Smith ◽  
Luke Dunne ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
High Density ◽  
Retinotopic Mapping ◽  
New Generation

Diffuse Optical Tomography of Visual Cortex Activation in Humans

2006 ◽  
Author(s):  
Joseph P. Culver ◽  
Benjamin W. Zeff ◽  
Hamid Dehghani
Keyword(s):  
Visual Cortex ◽  
Optical Tomography ◽  
Diffuse Optical Tomography

scholarly journals Effects of phase regression on high-resolution functional MRI of the primary visual cortex

NeuroImage ◽  
2021 ◽  
Vol 227 ◽  
pp. 117631
Author(s):  
Olivia W Stanley ◽  
Alan B Kuurstra ◽  
L Martyn Klassen ◽  
Ravi S Menon ◽  
Joseph S Gati
Keyword(s):  
Visual Cortex ◽  
High Resolution ◽  
Functional Mri ◽  
Primary Visual Cortex
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