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Discriminating grotesque from typical faces: evidence from the Thatcher illusion

Discriminating grotesque from typical faces: evidence from the Thatcher illusion
Discriminating grotesque from typical faces: evidence from the Thatcher illusion
The discrimination of thatcherized faces from typical faces was explored in two simultaneous alternative forced choice tasks. Reaction times (RTs) and errors were measured in a behavioural task. Brain activation was measured in an equivalent fMRI task. In both tasks, participants were tested with upright and inverted faces. Participants were also tested on churches in the behavioural task. The behavioural task confirmed the face specificity of the illusion (by comparing inversion effects for faces against churches) but also demonstrated that the discrimination was primarily, although not exclusively, driven by attending to eyes. The fMRI task showed that, relative to inverted faces, upright grotesque faces are discriminated via activation of a network of emotion/social evaluation processing areas. On the other hand, discrimination of inverted thatcherized faces was associated with increased activation of brain areas that are typically involved in perceptual processing of faces.

1932-6203
e23340
Donnelly, Nick
05c83b6b-ee8d-4c9d-85dc-c5dcd6b5427b
Zucher, Nicole R.
cc8e219a-de17-4a09-bcd3-95cd9a4aa96a
Cornes, Katherine
fc4947d9-b3e9-4e08-b15a-80af5550f9eb
Snyder, Josh
3ea9acca-2f88-479c-b36c-3b4d2a621aeb
Naik, Paulami
c9b54aba-4c57-48fb-b68c-12a64c90df13
Hadwin, Julie A.
a364caf0-405a-42f3-a04c-4864817393ee
Hadjikhani, Nouchine
c63d64a2-3ebe-4414-b395-a5cfea14ce41
Donnelly, Nick
05c83b6b-ee8d-4c9d-85dc-c5dcd6b5427b
Zucher, Nicole R.
cc8e219a-de17-4a09-bcd3-95cd9a4aa96a
Cornes, Katherine
fc4947d9-b3e9-4e08-b15a-80af5550f9eb
Snyder, Josh
3ea9acca-2f88-479c-b36c-3b4d2a621aeb
Naik, Paulami
c9b54aba-4c57-48fb-b68c-12a64c90df13
Hadwin, Julie A.
a364caf0-405a-42f3-a04c-4864817393ee
Hadjikhani, Nouchine
c63d64a2-3ebe-4414-b395-a5cfea14ce41

Donnelly, Nick, Zucher, Nicole R., Cornes, Katherine, Snyder, Josh, Naik, Paulami, Hadwin, Julie A. and Hadjikhani, Nouchine (2011) Discriminating grotesque from typical faces: evidence from the Thatcher illusion. PLoS ONE, 6 (8), e23340. (doi:10.1371/journal.pone.0023340).

Record type: Article

Abstract

The discrimination of thatcherized faces from typical faces was explored in two simultaneous alternative forced choice tasks. Reaction times (RTs) and errors were measured in a behavioural task. Brain activation was measured in an equivalent fMRI task. In both tasks, participants were tested with upright and inverted faces. Participants were also tested on churches in the behavioural task. The behavioural task confirmed the face specificity of the illusion (by comparing inversion effects for faces against churches) but also demonstrated that the discrimination was primarily, although not exclusively, driven by attending to eyes. The fMRI task showed that, relative to inverted faces, upright grotesque faces are discriminated via activation of a network of emotion/social evaluation processing areas. On the other hand, discrimination of inverted thatcherized faces was associated with increased activation of brain areas that are typically involved in perceptual processing of faces.

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Published date: 31 August 2011
Organisations: Clinical Neuroscience

Identifiers

Local EPrints ID: 196015
URI: https://eprints.soton.ac.uk/id/eprint/196015
ISSN: 1932-6203
PURE UUID: 6d74f648-2ede-4d3f-a214-5fe50cbbf6e7

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Date deposited: 01 Sep 2011 09:09
Last modified: 19 Jul 2019 22:56

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