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Temporal ventriloquism along the path of apparent motion: speed perception under different spatial grouping principles

Experimental brain research, 2018-03, Vol.236 (3), p.629-643 [Peer Reviewed Journal]

Springer-Verlag GmbH Germany, part of Springer Nature 2017 ;COPYRIGHT 2018 Springer ;Experimental Brain Research is a copyright of Springer, (2017). All Rights Reserved. ;ISSN: 0014-4819 ;EISSN: 1432-1106 ;DOI: 10.1007/s00221-017-5159-1 ;PMID: 29282487

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Title:
Temporal ventriloquism along the path of apparent motion: speed perception under different spatial grouping principles
Author: Ogulmus, Cansu ; Karacaoglu, Merve ; Kafaligonul, Hulusi
Subjects: Adult ; Auditory Perception - physiology ; Biomedical and Life Sciences ; Biomedicine ; Brain research ; Experiments ; Humans ; Motion detection ; Motion Perception - physiology ; Neurology ; Neurosciences ; Object motion ; Perceptions ; Physiological aspects ; Principles ; Psychological aspects ; Research Article ; Sensory integration ; Sound ; Space perception ; Space Perception - physiology ; Spatial discrimination ; Time Perception - physiology ; Ventriloquism ; Visual perception ; Young Adult
Is Part Of: Experimental brain research, 2018-03, Vol.236 (3), p.629-643
Description: The coordination of intramodal perceptual grouping and crossmodal interactions plays a critical role in constructing coherent multisensory percepts. However, the basic principles underlying such coordinating mechanisms still remain unclear. By taking advantage of an illusion called temporal ventriloquism and its influences on perceived speed, we investigated how audiovisual interactions in time are modulated by the spatial grouping principles of vision. In our experiments, we manipulated the spatial grouping principles of proximity, uniform connectedness, and similarity/common fate in apparent motion displays. Observers compared the speed of apparent motions across different sound timing conditions. Our results revealed that the effects of sound timing (i.e., temporal ventriloquism effects) on perceived speed also existed in visual displays containing more than one object and were modulated by different spatial grouping principles. In particular, uniform connectedness was found to modulate these audiovisual interactions in time. The effect of sound timing on perceived speed was smaller when horizontal connecting bars were introduced along the path of apparent motion. When the objects in each apparent motion frame were not connected or connected with vertical bars, the sound timing was more influential compared to the horizontal bar conditions. Overall, our findings here suggest that the effects of sound timing on perceived speed exist in different spatial configurations and can be modulated by certain intramodal spatial grouping principles such as uniform connectedness.
Publisher: Berlin/Heidelberg: Springer Berlin Heidelberg
Language: English
Identifier: ISSN: 0014-4819
EISSN: 1432-1106
DOI: 10.1007/s00221-017-5159-1
PMID: 29282487
Source: ProQuest One Psychology
MEDLINE
ProQuest Central

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Temporal ventriloquism along the path of apparent motion: speed perception under different spatial grouping principles

Springer-Verlag GmbH Germany, part of Springer Nature 2017 ;COPYRIGHT 2018 Springer ;Experimental Brain Research is a copyright of Springer, (2017). All Rights Reserved. ;ISSN: 0014-4819 ;EISSN: 1432-1106 ;DOI: 10.1007/s00221-017-5159-1 ;PMID: 29282487

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