کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6287697 | 1615626 | 2011 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Location of cells giving phase-locked responses to pure tones in the primary auditory cortex
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
سیستم های حسی
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چکیده انگلیسی
Phase-locked responses to pure tones have previously been described in the primary auditory cortex (AI) of the guinea pig. They are interesting because they show that some cells may use a temporal code for representing sounds of 60-300Â Hz rather than the rate or place mechanisms used over most of AI. Our previous study had shown that the phase-locked responses were grouped together, but it was not clear whether they were in separate minicolumns or a larger macrocolumn. We now show that the phase-locked cells are arranged in a macrocolumn within AI that forms a subdivision of the isofrequency bands. Phase-locked responses were recorded from 158Â multiunits using silicon based multiprobes with four shanks. The phase-locked units gave the strongest response in layers III/IV but phase-locked units were also recorded in layers II, V and VI. The column included cells with characteristic frequencies of 80Â Hz-1.3Â kHz (0.5-0.8Â mm long) and was about 0.5Â mm wide. It was located at a constant position at the intersection of the coronal plane 1Â mm caudal to bregma and the suture that forms the lateral edge of the parietal bone.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hearing Research - Volume 274, Issues 1â2, April 2011, Pages 142-151
Journal: Hearing Research - Volume 274, Issues 1â2, April 2011, Pages 142-151
نویسندگان
M.N. Wallace, B. Coomber, C.J. Sumner, J.M.S. Grimsley, T.M. Shackleton, A.R. Palmer,