Do temporal processes underlie left hemisphere dominance in speech perception?  

Oleh:

Scott, Sophie K. ; McGettigan, Carolyn

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 127 no. 1 (2013), page 36-45.
Topik: Auditory processing; Hemispheric asymmetries; Speech perception; Functional neuroimaging
Fulltext: 127_01_Scott.pdf (434.29KB)

Isi artikel

It is not unusual to find it stated as a fact that the left hemisphere is specialized for the processing of rapid, or temporal aspects of sound, and that the dominance of the left hemisphere in the perception of speech can be a consequence of this specialization. In this review we explore the history of this claim and assess the weight of this assumption. We will demonstrate that instead of a supposed sensitivity of the left temporal lobe for the acoustic properties of speech, it is the right temporal lobe which shows a marked preference for certain properties of sounds, for example longer durations, or variations in pitch. We finish by outlining some alternative factors that contribute to the left lateralization of speech perception.

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