DEPARTMENT OF PSYCHOLOGY
Mullette-Gillman, O'Dhaniel Alexander
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Mullette-Gillman, O'Dhaniel Alexander

Assistant Professor

Ph.D. (Dartmouth), B.A. (Oberlin)

My research investigates the neural mechanisms underlying the valuative and executive processes of decision-making. I employ complementary neuroscience methodologies. Functional magnetic resonance imaging (fMRI) specifies the neural instantiation of cognitive processes, such as dissociating between the valuative, contingency processing, and control mechanisms involved in human decision making. Manipulation techniques provide causal tests of relations between neural and cognitive processing, as when using acute tryptophan depletion (ATD) to examine the role of serotonin in decision making and valuation. Finally, individual differences in choice preferences provide information about how genetic polymorphisms and trait hormone levels may account for individual variation, through effects on dopaminergic and serotonergic transmission.

Research Interests:
  • Neuroeconomics
  • Cognitive Neuroscience
  • Decision making
  • Valuation
  • Executive control
  • Functional magnetic resonance imaging (fMRI)
  • Genetics of individual differences in economic preference
Recent/ Representative Publications:
  • Mullette-Gillman OA, Detwiler JM, Winecoff A, Dobbins I, Huettel SA.
    Infrequent, task-irrelevant rewards engage dorsolateral and ventrolateral prefrontal cortex.
    Brain Research 2011. PMID: 21565330
  • Stanton SJ, Mullette-Gillman OA, McLaurin RE, Kuhn, CM, LaBar KS, Platt ML, Huettel SA.
    Low and high testosterone individuals exhibit decreased aversion to economic risk.
    Psych. Sci. 2011: PMID: 21393575
  • Mullette-Gillman OA and Huettel SA (2009)
    Neural substrates of contingency learning and executive control: dissociating physical, valuative, and behavioral changes.
    Front. Hum. Neurosci. 2009;3:23 PMID: 19826625