Two-Dimensional Population Receptive Field Mapping of Human Primary Somatosensory Cortex.

Two-Dimensional Population Receptive Field Mapping of Human Primary Somatosensory Cortex.
复制标题

DOI:
10.1007/s10548-023-01000-8
复制
发表时间:
2023-11
期刊:
影响因子:
2.7
通讯作者:
Francis S
Francis S
中科院分区:
医学3区
文献类型:
--
作者:
Asghar M;Sanchez-Panchuelo R;Schluppeck D;Francis S

文献摘要

参考文献

相似文献

功能性磁共振成像可以提供人类大脑中感觉空间是如何映射的详细地图。在这里,我们使用一种新颖的16个刺激器设置(一个4 × 4网格)来测量数字间和数字内(D2-D4)空间的二维感官地图,使用高空间分辨率(1.25 mm各向同性)成像,并在7特斯拉的情况下测量10名参与者的群体感受场(pRF)地图。使用二维高斯pRF模型,我们捕获了横跨Brodmann区域的数字D2-D5的覆盖地图,并估计了pRF的大小和形状。此外,我们将结果与先前的研究进行了比较,这些研究通过将pRF模型约束为数字之间的一维高斯模型或数字内的一维高斯模型,使用了较少的刺激器。我们发现,跨越体感区域的prf倾向于强烈倾向于覆盖手指内轴。我们发现从D2-D5 pRF的大小增加。我们量化了Brodmann区(BA) 3b、3a、1、2的pRF形状,并显示了Brodmann区3a-2的pRF大小差异,BA2的估计更大。通常,二维高斯pRF模型能更好地表示由我们的数据生成的pRF覆盖图,而我们的数据本身是由二维刺激网格生成的。在线版本包含补充材料,可在10.1007/s10548-023-01000-8获得。
Functional magnetic resonance imaging can provide detailed maps of how sensory space is mapped in the human brain. Here, we use a novel 16 stimulator setup (a 4 × 4 grid) to measure two-dimensional sensory maps of between and within-digit (D2–D4) space using high spatial-resolution (1.25 mm isotropic) imaging at 7 Tesla together with population receptive field (pRF) mapping in 10 participants. Using a 2D Gaussian pRF model, we capture maps of the coverage of digits D2–D5 across Brodmann areas and estimate pRF size and shape. In addition, we compare results to previous studies that used fewer stimulators by constraining pRF models to a 1D Gaussian Between Digit or 1D Gaussian Within Digit model. We show that pRFs across somatosensory areas tend to have a strong preference to cover the within-digit axis. We show an increase in pRF size moving from D2–D5. We quantify pRF shapes in Brodmann area (BA) 3b, 3a, 1, 2 and show differences in pRF size in Brodmann areas 3a-2, with larger estimates for BA2. Generally, the 2D Gaussian pRF model better represents pRF coverage maps generated by our data, which itself is produced from a 2D stimulation grid. The online version contains supplementary material available at 10.1007/s10548-023-01000-8.
DOI: 10.1093/cercor/bhab097
发表时间: 2021-08-26
期刊: Cerebral cortex (New York, N.Y. : 1991)
影响因子: --
作者:
Wang L;Zhang Z;Okada T;Li C;Chen D;Funahashi S;Wu J;Yan T
通讯作者: Yan T
DOI: 10.1523/jneurosci.2005-18.2019
发表时间: 2019-11-13
影响因子: 5.3
作者:
Mancini, Flavia;Wang, Audrey P.;Rae, Caroline D.
通讯作者: Rae, Caroline D.
DOI: 10.1006/nimg.1998.0395
发表时间: 1999-02-01
期刊: NEUROIMAGE
影响因子: 5.7
作者:
Dale, AM;Fischl, B;Sereno, MI
通讯作者: Sereno, MI
DOI: 10.1016/j.neuroimage.2012.01.021
发表时间: 2012-08-15
期刊: NEUROIMAGE
影响因子: 5.7
作者:
Fischl, Bruce
通讯作者: Fischl, Bruce
DOI: 10.1109/tac.1974.1100705
发表时间: 1974-01-01
影响因子: 6.8
作者:
AKAIKE, H
通讯作者: AKAIKE, H