The influence of colour and sound on neuronal activation during visual object naming.
This paper investigates how neuronal activation for naming photographs of objects is influenced by the addition of appropriate colour or sound. Behaviourally, both colour and sound are known to facilitate object recognition from visual form. However, previous functional imaging studies have shown inconsistent effects. For example, the addition of appropriate colour has been shown to reduce antero-medial temporal activation whereas the addition of sound has been shown to increase posterior superior temporal activation. Here we compared the effect of adding colour or sound cues in the same experiment. We found that the addition of either the appropriate colour or sound increased activation for naming photographs of objects in bilateral occipital regions and the right anterior fusiform. Moreover, the addition of colour reduced left antero-medial temporal activation but this effect was not observed for the addition of object sound. We propose that activation in bilateral occipital and right fusiform areas precedes the integration of visual form with either its colour or associated sound. In contrast, left antero-medial temporal activation is reduced because object recognition is facilitated after colour and form have been integrated.
Hocking
Julia
J
Centre for Magnetic Resonance, The University of Queensland, Brisbane, Australia. julia.hocking@cmr.uq.edu.au
Price
Cathy J
CJ
D000161:Acoustic Stimulation; D000328:Adult; D000368:Aged; D001307:Auditory Perception / Q000502:physiology*; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology*; D055253:Color Vision / Q000502:physiology*; D005260:Female; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009415:Nerve Net / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology*; D009474:Neurons / Q000502:physiology*; D009483:Neuropsychological Tests; D009778:Occipital Lobe / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010775:Photic Stimulation; D049268:Positron-Emission Tomography; D013702:Temporal Lobe / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology; D014793:Visual Cortex / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology; D014795:Visual Pathways / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology; D055815:Young Adult
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