A direct demonstration of functional specialization in human visual cortex

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Paper (help)
A direct demonstration of functional specialization in human visual cortex
Authors: Semir Zeki, J. D. Watson, C. J. Lueck, Karl J. Friston, C. Kennard, Richard S. J. Frackowiak
Citation: The Journal of Neuroscience 11 (3): 641-649. 1991
Database(s): Brede Database Google Scholar cites PubMed (PMID/2002358)
DOI: Define doi.
Link(s): http://www.jneurosci.org/content/11/3/641.full.pdf
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A direct demonstration of functional specialization in human visual cortex reports a positron emission tomography study on motion vision and color vision.

Contents

[edit] Subjects

Subject group #1 (help)
Normal volunteers
Subjects/♂/♀: 9 / 9 / 0
Age: 29 (21–43)
Handedness: 7 right
Nationality: define nationality
Approval: Hammersmith Hospital Ethics Committee
Databases:

Group 1 of 9 7 right-handed normal volunteers with 9 males and 0 females were included in the study. The group had a mean age of 29 with a range from 21 to 43.

The study on the human subjects was approved by the Hammersmith Hospital Ethics Committee.
Subject group #2 (help)
Normal volunteers
Subjects/♂/♀: 6 / 6 / 0
Age: (–)
Nationality: define nationality
Approval: define approval
Databases:
Group 2 of 6 normal volunteers with 6 males and 0 females were included in the study.
Subject group #3 (help)
Normal volunteers
Subjects/♂/♀: 3 / 3 / 0
Age: (–)
Nationality: define nationality
Approval: define approval
Databases:

Group 3 of 3 normal volunteers with 3 males and 0 females were included in the study.


The second group where subjected to the Mondrian stimulus, and the third group the visual motion stimulus

[edit] Conditions

Psychoexperimental condition #1 (help)
Name: Eyes closed
Stimulus: define stimulus (define stimulus_modality1)
Instruction: define instruction
Behavioral response: define response (define response_modality1)
In condition no. 1, Eyes closed,
Psychoexperimental condition #2 (help)
Name: Mondrian
Stimulus: define stimulus (Color vision stimulus)
Instruction: define instruction
Behavioral response: define response (define response_modality1)
Cogn. comp.: Color vision
In condition no. 2, Mondrian, the subjects were presented with a Color vision stimulus.
Psychoexperimental condition #3 (help)
Name: Grey-scaled Mondrian
Stimulus: define stimulus (define stimulus_modality1)
Instruction: define instruction
Behavioral response: define response (define response_modality1)
In condition no. 3, Grey-scaled Mondrian,
Psychoexperimental condition #4 (help)
Name: Stationary random squares
Stimulus: define stimulus (define stimulus_modality1)
Instruction: define instruction
Behavioral response: define response (define response_modality1)
In condition no. 4, Stationary random squares,
Psychoexperimental condition #5 (help)
Name: Moving random squares
Stimulus: define stimulus (Motion vision stimulus)
Instruction: define instruction
Behavioral response: define response (define response_modality1)
Cogn. comp.: Motion vision
In condition no. 5, Moving random squares, the subjects were presented with a Motion vision stimulus.


[edit] Results

[edit] Color vision


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1 Right V4 20 -66 -4 Brede Database Brede Wiki NeuroSynth SumsDB Not available
2 Left V4 -26 -68 -8 Brede Database Brede Wiki NeuroSynth SumsDB Not available
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