n May 30 of this year, neuroCICS received the visit of Dr.
Ian Krajbich, researcher in Neuroeconomics from the
University of Ohio, USA, an activity that was managed by
the Center for Experimental Social Sciences (CESS) of the
University of Santiago de Chile and the University of
Oxford (Nuffield College).
Meeting with Ian Krajbich organized by CESS - USACH / University of Oxford and CICS - UDD
Dr. Krajbich of Ohio
State University (USA), combines the social sciences and
neurosciences to investigate the underlying mechanisms of
decision making, using tools from psychology, neuroscience
and economics. At this constructive meeting, Dr. Krajbich
presented his research on the influence of attention on
the assessment process on decision making. Specifically,
he showed his decision making model, based on the "Drift
Difussion Model", which uses the fixation of the gaze on
objects as part of the assessment process.
Krajbich's presentation, the neuroCICS doctoral students
had the opportunity to present and discuss the preliminary
results of their research. Gabriela Valdebenito-Oyarzo,
PhD student in Social Complex Sciences at the UDD,
presented the results of her research unit entitled
"Posterior Parietal Cortex encodes prediction error during
decision-making under ambiguity". In this Functional
Magnetic Resonance Imaging (fMRI) work, a region was
identified in the dorsal part of the posterior parietal
lobe, whose activity correlates with the error in
prediction, specifically, with the evaluation of the
results of an ambiguous decision. This occurs when, in a
decision making with probabilistic results, the exact
distribution of probabilities of outcomes is not known.
Then, by means of Transcranial Magnetic Stimulation (TMS)
and Electroencephalography (EEG), this area and a control
area were inhibited. Translated with
Dr.(c) Claudio Lavín, a PhD student at the Catholic University of Chile, presented part of the results of his doctoral thesis "Neural basis of pro-social decision-making", in which he tests the influence and cerebral bases of empathy and strategic thinking on pro-social decision-making, using a social decision-making game, where participants have the option of demonstrating pro-social behaviors towards others. The results showed that participants tended to cooperate more when their decisions were associated with helpful behaviour (condition of empathy) and when cooperation was of strategic value (strategic condition). In addition, when the cooperation involved costs for the participants, they showed brain responses associated with increased attention to the task under this situation.