Optimized Design and Analysis of Sparse-Sampling fMRI Experiments
نویسندگان
چکیده
منابع مشابه
Optimized Design and Analysis of Sparse-Sampling fMRI Experiments
Sparse-sampling is an important methodological advance in functional magnetic resonance imaging (fMRI), in which silent delays are introduced between MR volume acquisitions, allowing for the presentation of auditory stimuli without contamination by acoustic scanner noise and for overt vocal responses without motion-induced artifacts in the functional time series. As such, the sparse-sampling te...
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Introduction: The investigation of complex auditory processes has been difficult using fMRI due to the excessive image acquisition noise, typically 100-130 dB. The development of the sparse sampling paradigm was a major improvement in auditory research [1]. In this method, only a single volume is acquired with a long TR usually 12-16 seconds. The timing of the stimulus is jittered relative to t...
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The use of functional magnetic resonance imaging (fMRI) to explore central auditory function may be compromised by the intense bursts of stray acoustic noise produced by the scanner whenever the magnetic resonance signal is read out. We present results evaluating the use of one method to reduce the effect of the scanner noise: "sparse" temporal sampling. Using this technique, single volumes of ...
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ژورنال
عنوان ژورنال: Frontiers in Neuroscience
سال: 2013
ISSN: 1662-4548
DOI: 10.3389/fnins.2013.00055