Literaturnachweis - Detailanzeige
Autor/inn/en | Osnes, Berge; Hugdahl, Kenneth; Hjelmervik, Helene; Specht, Karsten |
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Titel | Increased Activation in Superior Temporal Gyri as a Function of Increment in Phonetic Features |
Quelle | In: Brain and Language, 116 (2011) 2, S.97-101 (5 Seiten)
PDF als Volltext |
Sprache | englisch |
Dokumenttyp | gedruckt; online; Zeitschriftenaufsatz |
ISSN | 0093-934X |
DOI | 10.1016/j.bandl.2010.10.001 |
Schlagwörter | Stimuli; Phonetics; Brain Hemisphere Functions; Cognitive Processes; Auditory Stimuli; Diagnostic Tests; Acoustics |
Abstract | A common assumption is that phonetic sounds initiate unique processing in the superior temporal gyri and sulci (STG/STS). The anatomical areas subserving these processes are also implicated in the processing of non-phonetic stimuli such as music instrument sounds. The differential processing of phonetic and non-phonetic sounds was investigated in this study by applying a "sound-morphing" paradigm, where the presence of phonetic features were parametrically varied, creating a step-wise transition from a non-phonetic sound into a phonetic sound. The stimuli were presented in an event-related fMRI design. The fMRI-BOLD data were analysed using parametric contrasts. The results showed a higher sensitivity for sounds containing phonetic features compared to non-phonetic sounds in the middle part of STG, and in the anterior part of the planum temporale (PT) bilaterally. Although the same areas were involved in the processing of non-phonetic sounds, a difference in activation was evident in the STG, with an increase in activation related to increment of phonetic features in the sounds. The results indicate a stimulus-driven, bottom-up process that utilizes general auditory resources in the secondary auditory cortex, depending on specific phonetic features in the sounds. (Contains 1 table and 3 figures.) (As Provided). |
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Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
Update | 2017/4/10 |