کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9348845 | 1263651 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Macaque ganglion cells, light adaptation, and the Westheimer paradigm
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
سیستم های حسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Macaque ganglion cells, light adaptation, and the Westheimer paradigm Macaque ganglion cells, light adaptation, and the Westheimer paradigm](/preview/png/9348845.png)
چکیده انگلیسی
Retinal adaptation mechanisms are considered relative to the Westheimer paradigm. Responses to a probe presented upon pedestals were obtained from macaque ganglion cells. On-center magnocellular (MC) cell responses decreased to a plateau as pedestal diameter increased, consistent with operation of a local adaptation pool. Off-center cells also demonstrated a vigorous response with small pedestals, but as pedestal size increased, responsivity decreased and then partially recovered as pedestals encroached upon the surround. The response trough was due to a profound suppression of maintained activity. Comparison with psychophysical data suggests a multiple physiological substrate for the Westheimer paradigm, involving an interaction between adaptation pools, changes in maintained firing due to center-surround mechanisms and a cortical component.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vision Research - Volume 45, Issue 3, February 2005, Pages 329-341
Journal: Vision Research - Volume 45, Issue 3, February 2005, Pages 329-341
نویسندگان
Joshua M. Kunken, Hao Sun, Barry B. Lee,