Dissociating verbal and nonverbal audiovisual object processing
Data(s) |
01/02/2009
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Resumo |
This fMRI study investigates how audiovisual integration differs for verbal stimuli that can be matched at a phonological level and nonverbal stimuli that can be matched at a semantic level. Subjects were presented simultaneously with one visual and one auditory stimulus and were instructed to decide whether these stimuli referred to the same object or not. Verbal stimuli were simultaneously presented spoken and written object names, and nonverbal stimuli were photographs of objects simultaneously presented with naturally occurring object sounds. Stimulus differences were controlled by including two further conditions that paired photographs of objects with spoken words and object sounds with written words. Verbal matching, relative to all other conditions, increased activation in a region of the left superior temporal sulcus that has previously been associated with phonological processing. Nonverbal matching, relative to all other conditions, increased activation in a right fusiform region that has previously been associated with structural and conceptual object processing. Thus, we demonstrate how brain activation for audiovisual integration depends on the verbal content of the stimuli, even when stimulus and task processing differences are controlled. |
Identificador | |
Publicador |
Academic Press |
Relação |
DOI:10.1016/j.bandl.2008.10.005 Hocking, Julia & Price, Cathy J. (2009) Dissociating verbal and nonverbal audiovisual object processing. Brain and Language, 108(2), pp. 89-96. |
Direitos |
Copyright 2008 Elsevier Inc. |
Fonte |
Faculty of Health; School of Psychology & Counselling |
Palavras-Chave | #110903 Central Nervous System #170204 Linguistic Processes (incl. Speech Production and Comprehension) #audiovisual integration #verbal/nonverbal #Auditory Perception #Brain Mapping #Magnetic Resonance Imaging #Reading #Speech Perception/physiology #Visual Perception/*physiology |
Tipo |
Journal Article |