In speech perception, extraction of meaning from complex streams of
sounds is surprisingly fast and efficient. By tracking the neural
time course of syllable processing with magnetoencephalography we
show that this continuous construction of meaning-based representations
is aided by both top-down (context-based) expectations and bottom-up
(acoustic-phonetic) cues in the speech signal. Syllables elicited
a sustained response at 200-600 ms (N400m) which became most similar
to that evoked by words when the expectation for meaningful speech
was increased by presenting the syllables among words and sentences
or using sentence-initial syllables. This word-like cortical processing
of meaningless syllables emerged at the build-up of the N400m response,
200-300 ms after speech onset, during the transition from perceptual
to lexical-semantic analysis. These findings show that the efficiency
of meaning-based analysis of speech is subserved by a cortical system
finely tuned to lexically relevant acoustic-phonetic and contextual
cues. 10.1093/cercor/bhi091
%0 Journal Article
%1 Bonte2006
%A Bonte, Milene L.
%A Parviainen, Tiina
%A Hytonen, Kaisa
%A Salmelin, Riitta
%D 2006
%I Oxford University Press
%J Cerebral Cortex
%K processing,qp,syntax
%N 1
%P 115--123
%R 10.1093/cercor/bhi091
%T Time course of top-down and bottom-up influences on syllable processing
in the auditory cortex
%V 16
%X In speech perception, extraction of meaning from complex streams of
sounds is surprisingly fast and efficient. By tracking the neural
time course of syllable processing with magnetoencephalography we
show that this continuous construction of meaning-based representations
is aided by both top-down (context-based) expectations and bottom-up
(acoustic-phonetic) cues in the speech signal. Syllables elicited
a sustained response at 200-600 ms (N400m) which became most similar
to that evoked by words when the expectation for meaningful speech
was increased by presenting the syllables among words and sentences
or using sentence-initial syllables. This word-like cortical processing
of meaningless syllables emerged at the build-up of the N400m response,
200-300 ms after speech onset, during the transition from perceptual
to lexical-semantic analysis. These findings show that the efficiency
of meaning-based analysis of speech is subserved by a cortical system
finely tuned to lexically relevant acoustic-phonetic and contextual
cues. 10.1093/cercor/bhi091
@article{Bonte2006,
abstract = {In speech perception, extraction of meaning from complex streams of
sounds is surprisingly fast and efficient. By tracking the neural
time course of syllable processing with magnetoencephalography we
show that this continuous construction of meaning-based representations
is aided by both top-down (context-based) expectations and bottom-up
(acoustic-phonetic) cues in the speech signal. Syllables elicited
a sustained response at 200-600 ms (N400m) which became most similar
to that evoked by words when the expectation for meaningful speech
was increased by presenting the syllables among words and sentences
or using sentence-initial syllables. This word-like cortical processing
of meaningless syllables emerged at the build-up of the N400m response,
200-300 ms after speech onset, during the transition from perceptual
to lexical-semantic analysis. These findings show that the efficiency
of meaning-based analysis of speech is subserved by a cortical system
finely tuned to lexically relevant acoustic-phonetic and contextual
cues. 10.1093/cercor/bhi091},
added-at = {2011-03-27T17:20:41.000+0200},
author = {Bonte, Milene L. and Parviainen, Tiina and Hytonen, Kaisa and Salmelin, Riitta},
biburl = {https://www.bibsonomy.org/bibtex/285690ac1c0bb54b8d421c3de081a1d7b/yevb0},
doi = {10.1093/cercor/bhi091},
interhash = {9d3a787b837aadc5cfaaa261834a3f01},
intrahash = {85690ac1c0bb54b8d421c3de081a1d7b},
journal = {Cerebral Cortex},
keywords = {processing,qp,syntax},
mendeley-tags = {processing,qp,syntax},
number = 1,
pages = {115--123},
publisher = {Oxford University Press},
timestamp = {2011-03-27T17:20:46.000+0200},
title = {Time course of top-down and bottom-up influences on syllable processing
in the auditory cortex},
type = {Journal article},
volume = 16,
year = 2006
}