Event Abstract Back to Event Dynamic value encoding in sequential choice utilizes dorsomedial prefrontal cortex C. Luk1* and J. D. Wallis1, 2 1 University of California, Helen Wills Neuroscience Institute, United States 2 University of California, Department of Psychology, United States Sequential choice paradigms can dissociate components of decision-making, specifically the valuation of choice options from the comparison of those options’ values. To probe the underlying neuronal mechanisms in valuation, we have recorded neuronal and local field potential (LFP) activity from dorsomedial and dorsolateral prefrontal cortex (PFdm and PFdl, respectively) of two monkeys as they performed a sequential choice task. They made two movements that led to two different rewards, and then chose to repeat one of the movements for more of the juice associated with that movement. We found that following juice delivery after the first movement, a similar proportion of neurons encoded the action in PFdm (52/112, 46%) and PFdl (83/172, 48%), whereas encoding of the juice reward was prominent in PFdm (67/112, 60%) but not PFdl (49/172, 28%). Across both areas, separate neuronal populations encoded action and reward. The neuronal activity also correlated with high LFP power in the gamma range. After maintaining the value of the first juice, PFdm neurons subsequently encoded the value of the second juice relative to the first, thereby providing the subject the appropriate information to make his choice. These findings suggest a preferential role of PFdm in the valuation stage of decision-making. Conference: The 20th Annual Rotman Research Institute Conference, The frontal lobes, Toronto, Canada, 22 Mar - 26 Mar, 2010. Presentation Type: Poster Presentation Topic: Abstracts Citation: Luk C and Wallis JD (2010). Dynamic value encoding in sequential choice utilizes dorsomedial prefrontal cortex. Conference Abstract: The 20th Annual Rotman Research Institute Conference, The frontal lobes. doi: 10.3389/conf.fnins.2010.14.00085 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 29 Jun 2010; Published Online: 29 Jun 2010. * Correspondence: C. Luk, University of California, Helen Wills Neuroscience Institute, Berkeley, United States, ch_luk@berkeley.edu Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers C. Luk J. D Wallis Google C. Luk J. D Wallis Google Scholar C. Luk J. D Wallis PubMed C. Luk J. D Wallis Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.