Encoding Pleasant and Unpleasant Expression of the Architectural Window Shapes: An ERP Study

The evaluation of building facades is one of the most important elements in built environments for helping architects and professionals to develop future designs. The form or shape of windows in building facades has direct impacts on perceivers’ affective state and emotions. To understand the impact...

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Main Authors: Parastou Naghibi Rad, Abbas Ali Shahroudi, Hamed Shabani, Sahar Ajami, Reza Lashgari
Format: Article
Language:English
Published: Frontiers Media S.A. 2019-08-01
Series:Frontiers in Behavioral Neuroscience
Subjects:
Online Access:https://www.frontiersin.org/article/10.3389/fnbeh.2019.00186/full
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author Parastou Naghibi Rad
Abbas Ali Shahroudi
Hamed Shabani
Sahar Ajami
Reza Lashgari
author_facet Parastou Naghibi Rad
Abbas Ali Shahroudi
Hamed Shabani
Sahar Ajami
Reza Lashgari
author_sort Parastou Naghibi Rad
collection DOAJ
description The evaluation of building facades is one of the most important elements in built environments for helping architects and professionals to develop future designs. The form or shape of windows in building facades has direct impacts on perceivers’ affective state and emotions. To understand the impacts of geometric windows on the subject’s feedback and cortical activity, psychophysics experiments and electroencephalogram (EEG) recordings were measured from the participants. Our behavioral results show a distinguished categorization of the window shapes as pleasant and unpleasant stimuli. The rectangular, square, circular and semi-circular arch were determined as the pleasant window shapes, while the triangular and triangular arch window shapes were distinguished as unpleasant. Furthermore, event-related potential (ERP) components (N1, P2 and P3) were investigated to determine the influence of window shapes on the local brain activity. To measure reliable cortical responses, a Butterworth notch filter (50 Hz), band pass filter (0.1–60 Hz) and ADJUST filter were employed to remove the artifacts. The electrophysiological results show increased activity for the unpleasant in comparison to the pleasant windows (p < 0.05, Rank-Sum test) in both frontal (for P2 component) and posterio-occipital (ERP amplitudes; the N1 through to the P3 peak) channels. The ERP amplitudes of the right hemisphere were significantly larger than in the left hemisphere, not only in response to the unpleasant (p < 0.001) but also to the pleasant window stimuli (p < 0.001, Signed-Rank test). However, the unpleasant stimuli evoked significantly larger ERP amplitude than the pleasant stimuli. Moreover, the significant ERPP2 amplitude was more distinguished for unpleasant (p = 0.01, Signed-Rank test) than pleasant windows (p = 0.01, Rank-Sum test) between frontal and central cortical lobes. Overall, our behavioral and electrophysiological studies demonstrate a distinguished categorization of pleasant and unpleasant window shapes and more significant ERP modulations in the right than left hemisphere for unpleasant windows compared to pleasant ones.
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spelling doaj.art-97b158a47dbe4ccb8c48f76a1c83ed162022-12-21T22:22:43ZengFrontiers Media S.A.Frontiers in Behavioral Neuroscience1662-51532019-08-011310.3389/fnbeh.2019.00186442587Encoding Pleasant and Unpleasant Expression of the Architectural Window Shapes: An ERP StudyParastou Naghibi Rad0Abbas Ali Shahroudi1Hamed Shabani2Sahar Ajami3Reza Lashgari4Brain Engineering Research Center, School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM), Tehran, IranFaculty of Art and Architecture, University of Mazandaran, Babolsar, IranBrain Engineering Research Center, School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM), Tehran, IranFaculty of Art and Architecture, University of Mazandaran, Babolsar, IranBrain Engineering Research Center, School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM), Tehran, IranThe evaluation of building facades is one of the most important elements in built environments for helping architects and professionals to develop future designs. The form or shape of windows in building facades has direct impacts on perceivers’ affective state and emotions. To understand the impacts of geometric windows on the subject’s feedback and cortical activity, psychophysics experiments and electroencephalogram (EEG) recordings were measured from the participants. Our behavioral results show a distinguished categorization of the window shapes as pleasant and unpleasant stimuli. The rectangular, square, circular and semi-circular arch were determined as the pleasant window shapes, while the triangular and triangular arch window shapes were distinguished as unpleasant. Furthermore, event-related potential (ERP) components (N1, P2 and P3) were investigated to determine the influence of window shapes on the local brain activity. To measure reliable cortical responses, a Butterworth notch filter (50 Hz), band pass filter (0.1–60 Hz) and ADJUST filter were employed to remove the artifacts. The electrophysiological results show increased activity for the unpleasant in comparison to the pleasant windows (p < 0.05, Rank-Sum test) in both frontal (for P2 component) and posterio-occipital (ERP amplitudes; the N1 through to the P3 peak) channels. The ERP amplitudes of the right hemisphere were significantly larger than in the left hemisphere, not only in response to the unpleasant (p < 0.001) but also to the pleasant window stimuli (p < 0.001, Signed-Rank test). However, the unpleasant stimuli evoked significantly larger ERP amplitude than the pleasant stimuli. Moreover, the significant ERPP2 amplitude was more distinguished for unpleasant (p = 0.01, Signed-Rank test) than pleasant windows (p = 0.01, Rank-Sum test) between frontal and central cortical lobes. Overall, our behavioral and electrophysiological studies demonstrate a distinguished categorization of pleasant and unpleasant window shapes and more significant ERP modulations in the right than left hemisphere for unpleasant windows compared to pleasant ones.https://www.frontiersin.org/article/10.3389/fnbeh.2019.00186/fullcortical activityEEG signalsERPbuilding facadeswindow shapespleasant and unpleasant expression
spellingShingle Parastou Naghibi Rad
Abbas Ali Shahroudi
Hamed Shabani
Sahar Ajami
Reza Lashgari
Encoding Pleasant and Unpleasant Expression of the Architectural Window Shapes: An ERP Study
Frontiers in Behavioral Neuroscience
cortical activity
EEG signals
ERP
building facades
window shapes
pleasant and unpleasant expression
title Encoding Pleasant and Unpleasant Expression of the Architectural Window Shapes: An ERP Study
title_full Encoding Pleasant and Unpleasant Expression of the Architectural Window Shapes: An ERP Study
title_fullStr Encoding Pleasant and Unpleasant Expression of the Architectural Window Shapes: An ERP Study
title_full_unstemmed Encoding Pleasant and Unpleasant Expression of the Architectural Window Shapes: An ERP Study
title_short Encoding Pleasant and Unpleasant Expression of the Architectural Window Shapes: An ERP Study
title_sort encoding pleasant and unpleasant expression of the architectural window shapes an erp study
topic cortical activity
EEG signals
ERP
building facades
window shapes
pleasant and unpleasant expression
url https://www.frontiersin.org/article/10.3389/fnbeh.2019.00186/full
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AT saharajami encodingpleasantandunpleasantexpressionofthearchitecturalwindowshapesanerpstudy
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