Hauptseite > Publikationsdatenbank > The effect of sequence repeat time on auditory cortex stimulation during phonetic discrimination > print

001     56237
005     20231113125535.0
024 7 _ |a pmid:10875906
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024 7 _ |a WOS:000088317700010
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024 7 _ |a 10.1006/nimg.2000.0588
|2 doi
024 7 _ |a 2128/3824
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037 _ _ |a PreJuSER-56237
041 _ _ |a eng
082 _ _ |a 610
082 _ _ |a 500
084 _ _ |2 WoS
|a Neurosciences
084 _ _ |2 WoS
|a Neuroimaging
084 _ _ |2 WoS
|a Radiology, Nuclear Medicine & Medical Imaging
100 1 _ |a Shah, J. N.
|0 P:(DE-Juel1)131794
|b 0
|u FZJ
245 _ _ |a The effect of sequence repeat time on auditory cortex stimulation during phonetic discrimination
260 _ _ |a Orlando, Fla.
|b Academic Press
|c 2000
295 1 0 |a NeuroImage Volume 12, Issue 1, July 2000, Pages 100-108
300 _ _ |a 100 - 108
336 7 _ |a Journal Article
|0 PUB:(DE-HGF)16
|2 PUB:(DE-HGF)
336 7 _ |a Output Types/Journal article
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336 7 _ |a Journal Article
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336 7 _ |a ARTICLE
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336 7 _ |a JOURNAL_ARTICLE
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336 7 _ |a article
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440 _ 0 |a NeuroImage
|x 1053-8119
|0 4545
|v 12
500 _ _ |a Record converted from VDB: 12.11.2012
500 _ _ |a Record converted from JUWEL: 18.07.2013
520 _ _ |a Acoustic noise generated by the MR scanner gradient system during fMRI studies of auditory function is a very significant potential confound. Despite these deleterious effects, fMRI of the auditory cortex has been successful and numerous practitioners have circumvented the problem of acoustic masking noise. In the context of auditory cortex fMRI, the sequence repeat time (TR) has the effect of altering the length of time during which the scanner is quiet. Indeed, the move to whole-brain fMRI makes the problem of acoustic noise more acute and points to the need to examine the role of TR and its influence on the BOLD signal. The aim of this study was to examine the effect of varying the TR time on activation of auditory cortex during presentation and performance of a phonetic discrimination task. The results presented here demonstrate that the influence of sequence repeat time is considerable. For a short repeat time it is likely that the noise from the scanner is a significant mask and hinders accurate task performance. At the other extreme, a repeat time of 9 s is also suboptimal, probably due to attentional effects and lack of concentration and not least because of the longer overall measurement times. The results of this study point to a complicated interplay between psychophysical factors as well as physical parameters; attention, acoustic noise, total duration of the experiment, consideration of the volume of acquisition, and overall difficulty of the task have to be assessed and balanced. For the paradigm used here, the results suggest an optimal TR of around 6 s for a 16-slice acquisition.
536 _ _ |a Zerebrale Repräsentation
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542 _ _ |l doi:10.1006/nimg.2000.0588 Copyright © 2000 Academic Press
588 _ _ |a Dataset connected to Web of Science, Pubmed
650 _ 2 |2 MeSH
|a Artifacts
650 _ 2 |2 MeSH
|a Auditory Cortex: physiology
650 _ 2 |2 MeSH
|a Discrimination (Psychology): physiology
650 _ 2 |2 MeSH
|a Humans
650 _ 2 |2 MeSH
|a Magnetic Resonance Imaging: instrumentation
650 _ 2 |2 MeSH
|a Male
650 _ 2 |2 MeSH
|a Noise
650 _ 2 |2 MeSH
|a Perceptual Masking
650 _ 2 |2 MeSH
|a Phonetics
650 _ 2 |2 MeSH
|a Time Factors
650 _ 7 |a J
|2 WoSType
700 1 _ |a Steinhoff, S.
|0 P:(DE-Juel1)VDB1574
|b 1
|u FZJ
700 1 _ |a Mirzazade, S.
|0 P:(DE-Juel1)VDB1072
|b 2
|u FZJ
700 1 _ |a Zafiris, O.
|0 P:(DE-Juel1)VDB1826
|b 3
|u FZJ
700 1 _ |a Grosse-Ruyken, M. L.
|0 P:(DE-Juel1)VDB508
|b 4
|u FZJ
700 1 _ |a Jäncke, R. K.
|0 P:(DE-HGF)0
|b 5
700 1 _ |a Zilles, K.
|0 P:(DE-Juel1)131714
|b 6
|u FZJ
773 _ _ |g Vol. 12, p. 100 - 108
|p 100 - 108
|q 12<100 - 108
|0 PERI:(DE-600)1471418-8
|t NeuroImage
|v 12
|y 2000
|x 1053-8119
856 4 _ |u https://juser.fz-juelich.de/record/56237/files/NeuroImage_2000_Shah_The%20Effect%20of%20Sequence%20Repeat%20Time%20on%20Auditory%20Cortex%20Stimulation%20During%20Phonetic%20Discr.pdf
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