BIEB 166 Lecture Notes - Lecture 4: Superior Colliculus, Bioassay, Neuroethology
8 Nov 2013
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Turn to face prey (show the interest towards the fly) Toads use feature detectors that are built into their eyes and central nervous system. Lateral inhibition: mutual inhibition between neighboring cells in a sensory system. In the visual system, this enhances edges and thus improves shape detection. Way in which (in this case) the retina sharpens the edges of images so that the toad can recognize objects more clearly against the background. If the toad is more interested, it will keep turning. The object is too large for the toad to fit in its mouth. Elongation of the object in relation to its direction of movement. The rate of neuron firing goes up when it is more interested in the object. Process of elimination, the neuron responsible for the behavior is figured out. Tectal class t5(2) neurons: show the response most similar to the behavior observed a. b. c. Provides information about the direction of the object.
