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Auditory selective attention: an fMRI investigation.

Pugh KR, offywitz BA, Shaywitz SE, Fulbright RK, Byrd D, Skudlarski P, Shankweiler DP, Katz L, Constable RT, Fletcher J, Lacadie C, Marchione K, Gore JC
Neuroimage. 1996 4 (3 Pt 1): 159-73

PMID: 9345506 · DOI:10.1006/nimg.1996.0067

In the present experiment, 25 adult subjects discriminated speech tokens ([ba]/[da]) or made pitch judgments on tone stimuli (rising/falling) under both binaural and dichotic listening conditions. We observed that when listeners performed tasks under the dichotic conditions, during which greater demands are made on auditory selective attention, activation within the posterior (parietal) attention system and at primary processing sites in the superior temporal and inferior frontal regions was increased. The cingulate gyrus within the anterior attention system was not influenced by this manipulation. Hemispheric differences between speech and nonspeech tasks were also observed, both at Broca's Area within the inferior frontal gyrus and in the middle temporal gyrus.

MeSH Terms (13)

Adult Attention Auditory Pathways Brain Mapping Cerebral Cortex Dichotic Listening Tests Dominance, Cerebral Gyrus Cinguli Humans Image Processing, Computer-Assisted Magnetic Resonance Imaging Pitch Discrimination Speech Perception

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