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Ea) Ebll MEI Figure a3 Reinhardt circuit. Green mdicataa excitation: manna Indicates Inhibrtlun. and {h} Whan Im- mama's am stlnwlata-u I'mm left In...

There are many explanations of receptive fields , many of them are incomplete.Thus, the definition of receptive fields has been extended quite dramatically from that of Sherrington and Hartline. While it is true that some cells are only active if the stimulus is in a particular location of the visual field, there can be many things in the receptive field unrelated to location. The best explanation of receptive fields comes from this Scholarpedia page. Shot 2018-05-11 at 2.55.31 PM.pnglook at Figure 8.9 (the Reichardt circuit), which of the neurons (A-I) has a receptive field that contains movement? What type of movement is in that receptive field? Explain how you would use microelectrode recordings or another experimental setup to prove that this neuron has this receptive field.2- Alcohol is known to disrupt GABA signalling in the brain (you may need to look up GABA if you have not yet). Based on what you know about the Reichardt circuit, how would alcohol act directly to influence motion perception?3-Suppose you have found a neuron in the lateral geniculate nucleus that has in its receptive field, a bright light stimulus simultaneously presented with a whistling sound. What type of "upstream" neurons must be connected to this neuron?4-Four ways that a neuron's receptive field could be determined: (1) the genes expressed by that neuron, (2) the neurons that are connected to it, (3) the receptors expressed by that neuron, and (4) the physical location of the neuron. Choose two of these four determinants and give an example of how the receptive field would be shaped by that determinant.

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