Functional magnetic resonance imaging of a human auditory cortex area involved in foreground–background decomposition

@article{Scheich1998FunctionalMR,
  title={Functional magnetic resonance imaging of a human auditory cortex area involved in foreground–background decomposition},
  author={Henning Scheich and Frank Baumgart and Birgit Gaschler-Markefski and Carola Tegeler and Claus Tempelmann and Hans-Jochen Heinze and Frank Schindler and Detlef Stiller},
  journal={European Journal of Neuroscience},
  year={1998},
  volume={10}
}
Auditory foreground–background decomposition is a pattern recognition process which combines simultaneous and sequential grouping in complex sound sequences. Using functional magnetic resonance imaging with reduced scanner noise and stimulation through a new type of earphones, we investigated the possibility that this process activates topographically distinct areas of human auditory cortex. A basic matching‐to‐sample task with variable tones (sequential grouping) caused significant activity in… 
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References

SHOWING 1-10 OF 39 REFERENCES
Functional magnetic resonance imaging of human auditory cortex
TLDR
The utility of magnetic resonance imaging in the study of human brain structure‐function relationships is confirmed and the role of the superior temporal gyrus in perception of acoustic‐phonetic features of speech, rather than processing of semantic features is emphasized.
Processing of complex sounds in the macaque nonprimary auditory cortex.
TLDR
The lateral areas of the monkey auditory cortex appear to be part of a hierarchical sequence in which neurons prefer increasingly complex stimuli and may form an important stage in the preprocessing of communication sounds.
Functional magnetic resonance imaging assessment of the human brain auditory cortex response to increasing word presentation rates.
TLDR
The total activate volume and the integrated signal response in bilateral primary and posterior superior secondary auditory cortices increased with increasing rate of word presentation, peaking at 90 wpm (with some intersubject variability) with a subsequent fall at 130 wpm.
Modulation of early sensory processing in human auditory cortex during auditory selective attention.
  • M. WoldorffC. Gallen F. Bloom
  • Biology, Psychology
    Proceedings of the National Academy of Sciences of the United States of America
  • 1993
TLDR
It is demonstrated that focused auditory attention in humans can selectively modulate sensory processing in auditory cortex beginning as early as 20 msec poststimulus, thereby providing strong evidence for an "early selection" mechanism of auditory attention that can regulate auditory input at or before the initial stages of cortical analysis.
Human Brain Language Areas Identified by Functional Magnetic Resonance Imaging
TLDR
Although partly in conflict with the classical model of language localization, FMRI findings are generally compatible with reported lesion data and provide additional support for ongoing efforts to refine and extend the classicalmodel.
Optical and FDG mapping of frequency-specific activity in auditory cortex.
TLDR
The assymetric tonotopic propagation of ORIS activity suggests subthreshold directional interaction mechanisms in the cortical network which may serve to relate low- to high-frequency components of complex sounds.
Separate Representation of Stimulus Frequency, Intensity, and Duration in Auditory Sensory Memory: An Event-Related Potential and Dipole-Model Analysis
TLDR
If the MMN generator process occurs where the stimulus information is stored, these findings strongly suggest that the frequency, intensity, and duration of acoustic stimuli have a separate neural representation in sensory memory.
Processing strategies for time‐course data sets in functional mri of the human brain
TLDR
The most effective method for image processing involves thresholding by shape as characterized by the correlation coefficient of the data with respect to a reference waveform followed by formation of a cross‐correlation image.
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