Population receptive field estimates of human auditory cortex.

Population receptive field estimates of human auditory cortex.
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人类听觉皮层的人口接受场估计。

DOI:
10.1016/j.neuroimage.2014.10.060
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发表时间:
2015-01-15
期刊:
影响因子:
5.7
通讯作者:
Fine I
Fine I
中科院分区:
医学1区
文献类型:
--
作者:
Thomas JM;Huber E;Stecker GC;Boynton GM;Saenz M;Fine I

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在这里,我们描述了一种测量人类初级听觉皮层(PAC)中肌体位图和估计体素带宽的方法,该方法使用了对群体感受野(pRF)模型的修改。pRF方法在声扫描仪噪声存在的情况下可靠地估计音调图,并且与相位编码技术相比有两个优点。首先,刺激设计是灵活的,不需要是频率级数,从而减少了由于习惯、期望和估计伪像造成的偏差,以及减少了时空BOLD非线性的影响。其次,pRF方法可以提供带宽作为频率函数的估计。我们发现,与周围的听觉响应区域(非PAC)相比,PAC内体素的带宽估计更窄。
Here we describe a method for measuring tonotopic maps and estimating bandwidth for voxels in human primary auditory cortex (PAC) using a modification of the population Receptive Field (pRF) model, developed for retinotopic mapping in visual cortex by. The pRF method reliably estimates tonotopic maps in the presence of acoustic scanner noise, and has two advantages over phase-encoding techniques. First, the stimulus design is flexible and need not be a frequency progression, thereby reducing biases due to habituation, expectation, and estimation artifacts, as well as reducing the effects of spatio-temporal BOLD nonlinearities. Second, the pRF method can provide estimates of bandwidth as a function of frequency. We find that bandwidth estimates are narrower for voxels within the PAC than in surrounding auditory responsive regions (non-PAC).
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