Stimulus content effect on the visual cortex with functional MRI

2002 ◽  
Author(s):  
P. Munoz ◽  
E. Micheli-Tzanakou
Keyword(s):  
Visual Cortex ◽  
Functional Mri ◽  
Stimulus Content

Fuzzy clustering of gradient-echo functional MRI in the human visual cortex. Part I: Reproducibility

1997 ◽  
Vol 7 (6) ◽  
pp. 1094-1101 ◽  
Author(s):  
Richard Baumgartner ◽  
Gordon Scarth ◽  
Claudia Teichtmeister ◽  
Ray Somorjai ◽  
Ewald Moser
Keyword(s):  
Visual Cortex ◽  
Functional Mri ◽  
Fuzzy Clustering ◽  
Gradient Echo ◽  
Human Visual Cortex

Asymmetrical Activation of Human Visual Cortex Demonstrated by Functional MRI with Monocular Stimulation

NeuroImage ◽  
2001 ◽  
Vol 14 (3) ◽  
pp. 632-641 ◽  
Author(s):  
A.T. Toosy ◽  
D.J. Werring ◽  
G.T. Plant ◽  
E.T. Bullmore ◽  
D.H. Miller ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Functional Mri ◽  
Human Visual Cortex ◽  
Monocular Stimulation

Texture Segregation in the Human Visual Cortex: A Functional MRI Study

2000 ◽  
Vol 83 (4) ◽  
pp. 2453-2457 ◽  
Author(s):  
Sabine Kastner ◽  
Peter De Weerd ◽  
Leslie G. Ungerleider
Keyword(s):  
Visual Cortex ◽  
Functional Mri ◽  
Receptive Fields ◽  
Higher Order ◽  
Checkerboard Pattern ◽  
Texture Segregation ◽  
Human Visual Cortex ◽  
Cell Recording ◽  
Visual Scenes ◽  
Mri Study

The segregation of visual scenes based on contour information is a fundamental process of early vision. Contours can be defined by simple cues, such as luminance, as well as by more complex cues, such as texture. Single-cell recording studies in monkeys suggest that the neural processing of complex contours starts as early as primary visual cortex. Additionally, lesion studies in monkeys indicate an important contribution of higher order areas to these processes. Using functional MRI, we have investigated the level at which neural correlates of texture segregation can be found in the human visual cortex. Activity evoked by line textures, with and without texture-defined boundaries, was compared in five healthy subjects. Areas V1, V2/VP, V4, TEO, and V3A were activated by both kinds of line textures as compared with blank presentations. Textures with boundaries forming a checkerboard pattern, relative to uniform textures, evoked significantly more activity in areas V4, TEO, less reliably in V3A, but not in V1 or V2/VP. These results provide evidence that higher order areas with large receptive fields play an important role in the segregation of visual scenes based on texture-defined boundaries.

Effect of acute hyperglycemia on functional MRI of the visual cortex

NeuroImage ◽  
1996 ◽  
Vol 3 (3) ◽  
pp. S275 ◽  
Author(s):  
R. Gruetter ◽  
E.R. Seaquist ◽  
K. Ugurbil
Keyword(s):  
Visual Cortex ◽  
Functional Mri ◽  
Acute Hyperglycemia

Effects of laser acupuncture on activation within the visual cortex: A functional MRI study

NeuroImage ◽  
2001 ◽  
Vol 13 (6) ◽  
pp. 978
Author(s):  
Stefan Golaszewski ◽  
Christian Siedentopf ◽  
Christian Kremster ◽  
Felix Mothaghy ◽  
Andreas Schlager ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Functional Mri ◽  
Laser Acupuncture ◽  
Mri Study

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

Eye dominance in the visual cortex using functional MRI at 1.5 T: An alternative method

2002 ◽  
Vol 6 (1) ◽  
pp. 40-48 ◽  
Author(s):  
Grant T. Liu ◽  
Atsushi Miki ◽  
Zachariah Goldsmith ◽  
Theo G.M. van Erp ◽  
Ellie Francis ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Functional Mri ◽  
Eye Dominance ◽  
Alternative Method
Sign in / Sign up

Export Citation Format

Share Document