Differential sensitivity for house pictographs and Chinese logographs in the 'parahippocampal place area'

Geqi Qi, Bin Wang, Satoshi Takahashi, Seiichiro Ohno, Susumu Kanazawa, Jinglong Wu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The 'parahippocampal place area, PPA' within parahippocampal cortex is generally implicated in perceiving the local visual environment. This region responds selectively and automatically in functional magnetic resonance imaging (fMRI) to house images. Previous studies have indicated that the house-selective response in the PPA can be explained by selectivity for low-level features of the visual stimuli, such as geometric structure and high special frequency (SF). However, it remains unclear which of the two visual features of stimuli contributes more to the house-selective response in the PPA. To address this issue, we compared the PPA response to house pictographs and Chinese logographs with two different levels of white noise. fMRI was used to record the subjects' PPA activation during category discrimination task between house and word. As a result, the PPA showed significant main effect of category but not noise level. The results suggest that the PPA is more tuned to geometrical structure of visual stimuli than their high SF features.

Original languageEnglish
Title of host publication2013 ICME International Conference on Complex Medical Engineering, CME 2013
Pages444-447
Number of pages4
DOIs
Publication statusPublished - 2013
Event2013 7th ICME International Conference on Complex Medical Engineering, CME 2013 - Beijing, China
Duration: May 25 2013May 28 2013

Publication series

Name2013 ICME International Conference on Complex Medical Engineering, CME 2013

Other

Other2013 7th ICME International Conference on Complex Medical Engineering, CME 2013
CountryChina
CityBeijing
Period5/25/135/28/13

Keywords

  • Chinese Logograph
  • House Pictograph
  • Parahippocampal Place Area (PPA)
  • functional Magnetic Resonance Imaging (fMRI)

ASJC Scopus subject areas

  • Biomedical Engineering

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