Neural Responses to Central and Peripheral Objects in the Lateral Occipital Cortex
Human object recognition and classification depend on the retinal location where the object is presented and decrease as eccentricity increases. The lateral occipital complex (LOC) is thought to be preferentially involved in the processing of objects, and its neural responses exhibit category biases...
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doaj-8a7ebf146ac946db9adf79a540e13f672020-11-25T02:21:01ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612016-02-011010.3389/fnhum.2016.00054144266Neural Responses to Central and Peripheral Objects in the Lateral Occipital CortexBin eWang0Jiayue eGuo1Tianyi eYan2Tianyi eYan3Seiichiro eOhno4Susumu eKanazawa5Qiang eHuang6Jinglong eWu7Jinglong eWu8Taiyuan University of TechnologyOkayama UniversityBeijing Institute of TechnologyBeijing Institute of TechnologyOkayama University HospitalOkayama UniversityBeijing Institute of TechnologyBeijing Institute of TechnologyOkayama UniversityHuman object recognition and classification depend on the retinal location where the object is presented and decrease as eccentricity increases. The lateral occipital complex (LOC) is thought to be preferentially involved in the processing of objects, and its neural responses exhibit category biases to objects presented in the central visual field. However, the nature of LOC neural responses to central and peripheral objects remains largely unclear. In the present study, we used functional magnetic resonance imaging (fMRI) and a wide-view presentation system to investigate neural responses to four categories of objects (faces, houses, animals, and cars) in the primary visual cortex (V1) and the lateral visual cortex, including the LOC and the retinotopic areas LO-1 and LO-2. In these regions, the neural responses to objects decreased as the distance between the location of presentation and center fixation increased, which is consistent with the diminished perceptual ability that was found for peripherally presented images. The LOC and LO-2 exhibited significantly positive neural responses to all eccentricities (0°-55°), but LO-1 exhibited significantly positive responses only to central eccentricities (0°-22°). By measuring the ratio relative to V1 (RRV1), we further demonstrated that eccentricity, category and the interaction between them significantly affected neural processing in these regions. LOC, LO-1, and LO-2 exhibited larger RRV1s when stimuli were presented at an eccentricity of 0º compared to when they were presented at the greater eccentricities. In LOC and LO-2, the RRV1s for images of faces, animals and cars showed an increasing trend when the images were presented at eccentricities of 11º to 33º. However, the RRV1s for houses showed a decreasing trend in LO-1 and no difference in the LOC and LO-2. We hypothesize that when houses and the images in the other categories were presented in the peripheral visual field, they were processed via different strategies in the lateral visual cortex.http://journal.frontiersin.org/Journal/10.3389/fnhum.2016.00054/fullfMRIlateral occipital cortexObject categoryRetinotopic mapsWide-view visual field |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Bin eWang Jiayue eGuo Tianyi eYan Tianyi eYan Seiichiro eOhno Susumu eKanazawa Qiang eHuang Jinglong eWu Jinglong eWu |
spellingShingle |
Bin eWang Jiayue eGuo Tianyi eYan Tianyi eYan Seiichiro eOhno Susumu eKanazawa Qiang eHuang Jinglong eWu Jinglong eWu Neural Responses to Central and Peripheral Objects in the Lateral Occipital Cortex Frontiers in Human Neuroscience fMRI lateral occipital cortex Object category Retinotopic maps Wide-view visual field |
author_facet |
Bin eWang Jiayue eGuo Tianyi eYan Tianyi eYan Seiichiro eOhno Susumu eKanazawa Qiang eHuang Jinglong eWu Jinglong eWu |
author_sort |
Bin eWang |
title |
Neural Responses to Central and Peripheral Objects in the Lateral Occipital Cortex |
title_short |
Neural Responses to Central and Peripheral Objects in the Lateral Occipital Cortex |
title_full |
Neural Responses to Central and Peripheral Objects in the Lateral Occipital Cortex |
title_fullStr |
Neural Responses to Central and Peripheral Objects in the Lateral Occipital Cortex |
title_full_unstemmed |
Neural Responses to Central and Peripheral Objects in the Lateral Occipital Cortex |
title_sort |
neural responses to central and peripheral objects in the lateral occipital cortex |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Human Neuroscience |
issn |
1662-5161 |
publishDate |
2016-02-01 |
description |
Human object recognition and classification depend on the retinal location where the object is presented and decrease as eccentricity increases. The lateral occipital complex (LOC) is thought to be preferentially involved in the processing of objects, and its neural responses exhibit category biases to objects presented in the central visual field. However, the nature of LOC neural responses to central and peripheral objects remains largely unclear. In the present study, we used functional magnetic resonance imaging (fMRI) and a wide-view presentation system to investigate neural responses to four categories of objects (faces, houses, animals, and cars) in the primary visual cortex (V1) and the lateral visual cortex, including the LOC and the retinotopic areas LO-1 and LO-2. In these regions, the neural responses to objects decreased as the distance between the location of presentation and center fixation increased, which is consistent with the diminished perceptual ability that was found for peripherally presented images. The LOC and LO-2 exhibited significantly positive neural responses to all eccentricities (0°-55°), but LO-1 exhibited significantly positive responses only to central eccentricities (0°-22°). By measuring the ratio relative to V1 (RRV1), we further demonstrated that eccentricity, category and the interaction between them significantly affected neural processing in these regions. LOC, LO-1, and LO-2 exhibited larger RRV1s when stimuli were presented at an eccentricity of 0º compared to when they were presented at the greater eccentricities. In LOC and LO-2, the RRV1s for images of faces, animals and cars showed an increasing trend when the images were presented at eccentricities of 11º to 33º. However, the RRV1s for houses showed a decreasing trend in LO-1 and no difference in the LOC and LO-2. We hypothesize that when houses and the images in the other categories were presented in the peripheral visual field, they were processed via different strategies in the lateral visual cortex. |
topic |
fMRI lateral occipital cortex Object category Retinotopic maps Wide-view visual field |
url |
http://journal.frontiersin.org/Journal/10.3389/fnhum.2016.00054/full |
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