کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9424380 1295263 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cathode-ray-tube monitor artefacts in neurophysiology
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
Cathode-ray-tube monitor artefacts in neurophysiology
چکیده انگلیسی
We demonstrate that cathode-ray-tube (CRT) monitors commonly used as stimulus generators in visual neuroscience produce signal artefacts. This arises from two factors, one being the finite time needed for the raster scan of the CRT to cross the receptive field being stimulated, and the other being the restraint imposed by the impulse response of the phosphor itself. Together these factors result in smearing or blurring that manifests as high frequency noise, distorting the desired signal applied by the investigator. Our analysis identifies those conditions that promote these artefacts and we describe methods for their minimisation. We suggest that a monitor frame rate ≥100 Hz provides a reasonable trade-off between refresh and the generators of high frequency noise.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Neuroscience Methods - Volume 141, Issue 1, 30 January 2005, Pages 1-7
نویسندگان
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