PSYC 211 Lecture Notes - Lecture 5: Halorhodopsin, Optogenetics, Transcranial Magnetic Stimulation
11 Mar 2013
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Document Summary
Brain stereotaxy: the means by which the tip of an injector can reach the depths of certain brain regions, no two brains of any given species are identical. Enough similarities to predict certain locations: the skull is made up of several bones that join together and form sutures. The junction at which the sutures meet at the front of the head is called bregma. The junction at the cordial end at which the sutures meet at the back of the head is called lambda: stereotaxic surgery is a form of surgical intervention. It uses a three dimensional coordinate system to locate a target brain region and perform the lesion: a stereotaxic atlas contains drawings that correspond to brain sections taken at varying distances from bregma. Histological methods (2): golgi staining: the golgi stain allows us to visually identify the external structure of neurons, the neuron silhouettes are revealed in great detail but the internal structure of the cells is invisible.
