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2018BloechleEtAl_GestaltPerceptionInVisualQuantification_Neuroimage.pdf (263.51 kB)

Neuro-cognitive mechanisms of global Gestalt perception in visual quantification

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journal contribution
posted on 2020-07-10, 08:46 authored by J Bloechle, S Huber, E Klein, Julia BahnmuellerJulia Bahnmueller, Korbinian MoellerKorbinian Moeller, J Rennig
© 2018 Recent neuroimaging studies identified posterior regions in the temporal and parietal lobes as neuro-functional correlates of subitizing and global Gestalt perception. Beyond notable overlap on a neuronal level both mechanisms are remarkably similar on a behavioral level representing both a specific form of visual top-down processing where single elements are integrated into a superordinate entity. In the present study, we investigated whether subitizing draws on principles of global Gestalt perception enabling rapid top-down processes of visual quantification. We designed two functional neuroimaging experiments: a task identifying voxels responding to global Gestalt stimuli in posterior temporo-parietal brain regions and a visual quantification task on dot patterns with magnitudes within and outside the subitizing range. We hypothesized that voxels activated in global Gestalt perception should respond stronger to dot patterns within than those outside the subitizing range. The results confirmed this prediction for left-hemispheric posterior temporo-parietal brain areas. Additionally, we trained a classifier with response patterns from global Gestalt perception to predict neural responses of visual quantification. With this approach we were able to classify from TPJ Gestalt ROIs of both hemispheres whether a trial requiring subitizing was processed. The present study demonstrates that mechanisms of subitizing seem to build on processes of high-level visual perception.

Funding

The German Research Foundation (DFG)(MO 2525/2-1)

LEAD Graduate School [GSC1028]

Leibniz-Competition Fund (SAW)(SAW-2014-IWM-4

History

School

  • Science

Department

  • Mathematics Education Centre

Published in

NeuroImage

Volume

181

Pages

359 - 369

Publisher

Elsevier

Version

  • AM (Accepted Manuscript)

Rights holder

© Elsevier

Publisher statement

This paper was accepted for publication in the journal Dalton Transactions and the definitive published version is available at https://doi.org/10.1016/j.neuroimage.2018.07.026

Acceptance date

2018-07-12

Publication date

2018-07-18

Copyright date

2018

ISSN

1053-8119

eISSN

1095-9572

Language

  • en

Depositor

Dr Julia Bahnmuller. Deposit date: 8 July 2020