Categorization of lateralized faces with spatial frequency filtering presented at high and low temporal constraints

• Grant number: 13/24558-0
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: April 01, 2014
• End date: March 31, 2015
• Field of knowledge: Humanities - Psychology - Experimental Psychology
• Principal Investigator: Sergio Sheiji Fukusima
• Grantee: Rui de Moraes Júnior
• Supervisor: Jocelyn Faubert
• Host Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil
• Institution abroad: Université de Montréal, Canada
• Associated to the scholarship: 12/00945-2 - Hemispheric specialization and coarse-to-fine processing of spatial frequencies of complex visual stimuli in men and women, BP.DR

Abstract

This study aims to investigate how the cerebral hemispheres use spatial frequency (SF) information at early stages of visual processing for face perception. Twenty volunteers (10 women) will participate in an emotional vs. neutral facial categorization task. Lateralized faces will be presented under two exposure times (50 or 150 ms) and three spatial filters (low-pass, high-pass or unfiltered). A three-way ANOVA will be performed on psychophysical parameter d' and response time, with exposure duration, SF content, and visual field of presentation as within-participant factors. The sample will be segmented by sex to check if there is any difference between men and women. (AU)