PHGY 314 Lecture Notes - Lecture 18: Vestibular System, Gie, Tetrode
11 Feb 2017
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Sensory control over place fields in the hippocampus. Animal fitted with tetrode sitting inside a small bucket in the center of a box which has a cue card on one of the walls. The vestibular system encodes head rotations and translation but very slow rotation will not activate the system so the animal will not perceive that it has been moved from its original position. Thirdly, you can also just remove the animal from the environment while you are making the manipulation and then put them back in afterwards. Normally there is no conflict between the internal compass and the placement of the external landmark (initial box exposure) When the cue card is rotated, there is a conflict but the animal will orient itself based on the cue change rather than its internal compass. If the animal sees you rotate the cue card, there is conflict but the internal compass will win and the animal will reorient itself.
