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Lecture

Receptive Fields & Projections of Retina (1).docx

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Department
Psychology
Course
PSYCH 2E03
Professor
Gautam Ullal
Semester
Fall

Description
October 15 , 2012 Psych 2E03: Sensory Processes Receptive Fields & Projections of Retina (1) ON-OFF system: neurotransmitter mechanisms - glutamate works on two different receptors:  mGluR6 (metabotropic) inhibition, hyperpolirazation  AMPA/Kainate receptor (ionotropic) depolarizes the bipolar cells - receptors decides whether glutamate will excite or inhibit the bipolar cells - bipolar and ganglion: no change in sign - possible change between receptor and bipolar depending on the receptor: on or off - baseline firing, spontaneous firing patterns, removal of bipolar cells there is still firing in ganglion cells but influences baseline of firing (rapidity) ON-OFF receptive field circuitry and lateral inhibition - lateral inhibition: inhibition transmitted laterally across a nerve
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