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Cross-Modal Recruitment of Primary Visual Cortex by Auditory Stimuli in the Nonhuman Primate Brain: A Molecular Mapping Study
Joint Authors
Hirst, Priscilla
Javadi Khomami, Pasha
Gharat, Amol
Zangenehpour, Shahin
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-06-21
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Recent studies suggest that exposure to only one component of audiovisual events can lead to cross-modal cortical activation.
However, it is not certain whether such crossmodal recruitment can occur in the absence of explicit conditioning, semantic factors, or long-term associations.
A recent study demonstrated that crossmodal cortical recruitment can occur even after a brief exposure to bimodal stimuli without semantic association.
In addition, the authors showed that the primary visual cortex is under such crossmodal influence.
In the present study, we used molecular activity mapping of the immediate early gene zif268.
We found that animals, which had previously been exposed to a combination of auditory and visual stimuli, showed increased number of active neurons in the primary visual cortex when presented with sounds alone.
As previously implied, this crossmodal activation appears to be the result of implicit associations of the two stimuli, likely driven by their spatiotemporal characteristics; it was observed after a relatively short period of exposure (~45 min) and lasted for a relatively long period after the initial exposure (~1 day).
These results suggest that the previously reported findings may be directly rooted in the increased activity of the neurons occupying the primary visual cortex.
American Psychological Association (APA)
Hirst, Priscilla& Javadi Khomami, Pasha& Gharat, Amol& Zangenehpour, Shahin. 2012. Cross-Modal Recruitment of Primary Visual Cortex by Auditory Stimuli in the Nonhuman Primate Brain: A Molecular Mapping Study. Neural Plasticity،Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-1002346
Modern Language Association (MLA)
Hirst, Priscilla…[et al.]. Cross-Modal Recruitment of Primary Visual Cortex by Auditory Stimuli in the Nonhuman Primate Brain: A Molecular Mapping Study. Neural Plasticity No. 2012 (2012), pp.1-11.
https://search.emarefa.net/detail/BIM-1002346
American Medical Association (AMA)
Hirst, Priscilla& Javadi Khomami, Pasha& Gharat, Amol& Zangenehpour, Shahin. Cross-Modal Recruitment of Primary Visual Cortex by Auditory Stimuli in the Nonhuman Primate Brain: A Molecular Mapping Study. Neural Plasticity. 2012. Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-1002346
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1002346