BIOL 306 Lecture Notes - Lecture 15: Receptive Field, Ganglion, Retina

• School: McGill University
• Department: Biology
• Course: BIOL 306
• Professor: Alanna J.Watt

Document Summary

Note: the text in purple is added directly from the slides, after the lecture. Neurons in the optic tectum respond best to worm stimuli and neuronal responses corresponds most to behavior/change in length of s. Hypothesis: feature detectors in optic tectum are important for hunting behavior in toads. Feature detectors: neurons with complex response properties; different feature detectors have difference correspondence to behavior. Relay from retina to lgn to v1 one of the primary pathways underlying visual perception in mammals. Presenting monkey with different bars in different orientations moving perpendicular to its axis. Other types of feature selectivity in the visual system: neurons in the primary visual cortex (v1) are feature detectors. Single neuron in v1 [see slide] orientation-dependent neuron. As bar passes through receptive field, neuron is maximally excited if bar is in a particular orientation, regardless of direrction it"s moving in. Depiction of receptive field: circle = area in space the neuron cares about.