Journal Article

PreJuSER-21492

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Effects of Prior Information on Decoding Degraded Speech: An fMRI Study

Clos, M.FZJ* ; Langner, R.FZJ* ; Meyer, M. ; Oechslin, M. ; Zilles, K.FZJ* ; Eickhoff, S. B.FZJ*

2014
Wiley-Liss New York, NY

This record in other databases:      

Please use a persistent id in citations: http://hdl.handle.net/2128/7487  doi:10.1002/hbm.22151

Abstract: Expectations and prior knowledge are thought to support the perceptual analysis of incoming sensory stimuli, as proposed by the predictive-coding framework. The current fMRI study investigated the effect of prior information on brain activity during the decoding of degraded speech stimuli. When prior information enabled the comprehension of the degraded sentences, the left middle temporal gyrus and the left angular gyrus were activated, highlighting a role of these areas in meaning extraction. In contrast, the activation of the left inferior frontal gyrus (area 44/45) appeared to reflect the search for meaningful information in degraded speech material that could not be decoded because of mismatches with the prior information. Our results show that degraded sentences evoke instantaneously different percepts and activation patterns depending on the type of prior information, in line with prediction-based accounts of perception. Hum Brain Mapp, 2012. © 2012 Wiley Periodicals, Inc.

Note: Record converted from VDB: 12.11.2012

---

Contributing Institute(s):

1. Strukturelle und funktionelle Organisation des Gehirns (INM-1)
2. Molekulare Organisation des Gehirns (INM-2)

Research Program(s):

1. Funktion und Dysfunktion des Nervensystems (FUEK409) (FUEK409)
2. 89571 - Connectivity and Activity (POF2-89571) (POF2-89571)

Appears in the scientific report 2012
Notes: Online First

---

Database coverage:
; ; BIOSIS Previews ; Current Contents - Life Sciences ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

---