کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4322591 1291719 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cellular Mechanisms for Direction Selectivity in the Retina
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب سلولی و مولکولی
پیش نمایش صفحه اول مقاله
Cellular Mechanisms for Direction Selectivity in the Retina
چکیده انگلیسی

Direction selectivity represents a fundamental computation found across multiple sensory systems. In the mammalian visual system, direction selectivity appears first in the retina, where excitatory and inhibitory interneurons release neurotransmitter most rapidly during movement in a preferred direction. Two parallel sets of interneuron signals are integrated by a direction-selective ganglion cell, which creates a direction preference for both bright and dark moving objects. Direction selectivity of synaptic input becomes amplified by action potentials in the ganglion cell dendrites. Recent work has elucidated direction-selective mechanisms in inhibitory circuitry, but mechanisms in excitatory circuitry remain unexplained.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: - Volume 55, Issue 2, 19 July 2007, Pages 179–186
نویسندگان
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