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Identifying neural correlates of time perception and intertemporal choice: a developmental approach

Grant number: 17/20875-2
Support Opportunities:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): April 01, 2018
Effective date (End): September 30, 2021
Field of knowledge:Humanities - Psychology - Experimental Psychology
Principal Investigator:Yossi Zana
Grantee:Janine Ribeiro Camatti
Host Institution: Centro de Matemática, Computação e Cognição (CMCC). Universidade Federal do ABC (UFABC). Ministério da Educação (Brasil). Santo André , SP, Brazil


Investigations within the Neuroeconomics research field aim to understand the cognitive and neurological mechanisms that generate the economic behavior of individuals. One of the relevant issues of this field is the intertemporal choice, i.e., decisions involving consequences that can vary over time. As a general rule, humans apply a variable devaluation rate: discount rates are higher for rewards expected in the near future than for rewards expected further in time. One source for this inconsistency is theorized to be the perception of time, i.e., the magnitude of the time intervals in the tasks is perceived non-linearly. However, in a recent study, it is suggested that time perception may follow an accelerated, a linear or a decelerated trend, depending on the individual. Moreover, current paradigm may confound abstract number magnitude estimation with time perception, as demonstrated in a recent study (paper in final stage for submission). Earlier studies suggest that intertemporal choice consists in two systems of control and valuation, but very little in known of their relation with time perception. In this research project we propose to localize brain regions related to time perception, abstract numeric magnitude estimation and discount rate and to establish the level connectivity between them. Adolescents and adults will be the population target of this work. Methods include behavioral measurements, psychophysical functions derivation, NIRS for brain activity monitoring and brain connectivity analysis. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DE BRITO, FRANCISCO XAVIER; LUZ-SANTOS, CLEBER; CAMATTI, JANINE RIBEIRO; DE SOUZA DA FONSECA, RODRIGO JORGE; SUZARTH, GIOVANA; MORAES, LAISE MONTEIRO CAMPOS; DA SILVA, MARCELO LOURENCO; DA SILVA, JOSIE RESENDE TORRES; VERCELINO, RAFAEL; SA, KATIA NUNES; et al. lectroacupuncture modulates cortical excitability in a manner dependent on the parameters use. Acupuncture in Medicine, v. 40, n. 2, . (17/20875-2)

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