PSYCH 1XX3 Lecture Notes - Lecture 10: Vasopressin, Limbic System, Frontal Lobe
14 Apr 2016
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Natural = working with animal tissues or more reduced preparations. Phineas gage = removing large rocks from path of railroad; 3 foot iron rod through top of skull, recovered. Advantage: a direct measure of a brain structure"s function. Disadvantage: hard to selectively target particular regions and draw conclusions. Studying specific brain lesions induced in animal models studied. Researcher destroys, removes or inactivates a defined brain region and observes the behaviour. Penfield= revolutionized techniques in brain surgery as he perfected his montreal. Single cell recording provides information about only a limited area in the brain though it can reveal function linked to firing of specific neurons. To study large-scale structure & function of brain regions, neuroscientists use structural & functional neuroimaging techniques. Computed tomography (ct) = first structural neuroimaging technique developed; series of x-ray slices of brain are taken and pieced together to produce quick & inexpensive picture of brain; helpful to diagnose brain injuries.
