Scientific Inference Empirical method to study the unobservable The neural mechanisms of behavior cannot be directly observed Measure what you can observe Logically inferring the nature of events that cannot be observed

Critical Thinking Delgado’s charging bull Video: New York Times report:

Critical Thinking Delgado’s claim 1965 New York Times report: “functions traditionally related to the psyche, such as friendliness, pleasure or verbal expression, can be induced, modified and inhibited by direct electrical stimulation of the brain.”

Morgan’s Canon “An examination of the film record makes it apparent that the charging bull was stopped because as long as the stimulation was on it was forced to turn around in the same direction continuously.” (Valenstein, 1973, p. 98) “An examination of the film record makes it apparent that the charging bull was stopped because as long as the stimulation was on it was forced to turn around in the same direction continuously.” (Valenstein, 1973, p. 98)

I have this chimp, Becky…

Prefrontal lobotomy: leucotome

7 Critical Thinking Transorbital lobotomy Howard Dully during his transorbital lobotomy, Dec. 16, Credit: George Washington University Gelman Library Howard Dully holding one of Dr. Walter Freeman's original ice picks, January Courtesy Sound Portraits, George Washington University Gelman Library

8 Wires threaded under the patient's scalp and neck skin are connected to a battery pack implanted below the collarbone. The pack delivers continuous electrical current at programmed settings and can be adjusted externally by placing a controller over it. Henry Ford Health System An X-ray shows two deep brain stimulation electrodes implanted on either side of a patient's brain. Courtesy Dr. Helen Mayberg Brain Implant Offers Hope for Severely Depressed

PubMed

R8JGXSUQ9PQ-19313?func=find-db-1-title&mode=titles&scan_start=p%3F Cook Library  research port – click “P” in alphabetical list