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Jan 31, 2018 at 4:00 pm

Dr. Geoffrey Schoenbaum from the National Institute on Drug Abuse (NIDA)

event_title

http://tdlc.ucsd.edu/research/DNS/speakers/Schoenbaum.html

Abstract: Associative learning is driven by prediction errors that occur in response to unexpected outcomes. Dopamine transients correlate with these errors, at least for rewards, however current interpretations limit these biological signals to transmitting errors in so-called cached or model-free value. This influential hypothesis is supported by much correlative data, but several key predictions have remained untested. One is that learning supported by such errors is content-free, consisting only of value and not including any specific information about the predicted future events. Another is that these errors are not elicited by surprising events unless the scalar value represented by those events is not as expected. In my talk, I will describe experiments we have done to directly test these predictions for VTA dopamine neurons recorded in rats. In each case, the results failed to match the straightforward predictions of this popular account and instead were consistent with a much broader view of the role of this biological system in supporting associative learning in the mammalian brain.

Bio: I was born in Chicago, raised in Chapel Hill, went to undergrad in Georgia, before returning to UNC for my MD and PhD degrees. I did my dissertation work with the incomparable Dr. Howard Eichenbaum, and following a brief, aborted attempt at residency at Yale, I became a postdoc and then research scientist under Dr. Michela Gallagher at UNC and Hopkins. In 2003, I started my own lab at the University of Maryland School of Medicine, where I remained until 2010, when I moved to accept a position as a Branch Chief at the NIDA Intramural Research Program. I love mountain biking, my wife Anna, and my two sons, Joseph and Ansel.

Event Website

Date and Time

Jan 31, 2018 at 4:00 pm

Location

Sanford Consortium, Duane J. Roth Auditorium - 2880 Torrey Pines Scenic Drive, La Jolla, CA 92037

Event Registration

Registration is not required for this event.

Event Fee

The seminar and light reception following the presentation are FREE

Contact

Keri O'Leary    kaoleary@ucsd.edu    858-822-5805

Audience

Faculty, Staff, Students, The General Public

Event Host

Dart Neuroscience - TDLC

Event Category

Talks and Lectures