A visual encoding model links magnetoencephalography signals to neural synchrony in human cortex.
A visual encoding model links magnetoencephalography signals to neural synchrony in human cortex.
复制标题
视觉编码模型将脑磁图信号与人类皮层的神经同步联系起来。
DOI:
10.1016/j.neuroimage.2021.118655
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发表时间:
2021-12-15
期刊:
影响因子:
5.7
通讯作者:
Winawer J
中科院分区:
文献类型:
--
作者:
Kupers ER;Benson NC;Winawer J
Synchronization of neuronal responses over large distances is hypothesized to be important for many cortical functions. However, no straightforward methods exist to estimate synchrony non-invasively in the living human brain. MEG and EEG measure the whole brain, but the sensors pool over large, overlapping cortical regions, obscuring the underlying neural synchrony. Here, we developed a model from stimulus to cortex to MEG sensors to disentangle neural synchrony from spatial pooling of the instrument. We find that synchrony across cortex has a surprisingly large and systematic effect on predicted MEG spatial topography. We then conducted visual MEG experiments and separated responses into stimulus-locked and broadband components. The stimulus-locked topography was similar to model predictions assuming synchronous neural sources, whereas the broadband topography was similar to model predictions assuming asynchronous sources. We infer that visual stimulation elicits two distinct types of neural responses, one highly synchronous and one largely asynchronous across cortex.
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影响因子:
5.7
作者:
Ales, Justin M.;Yates, Jacob L.;Norcia, Anthony M.
通讯作者:
Norcia, Anthony M.
DOI:
10.1038/nrn3241
发表时间:
2012-05-18
期刊:
Nature reviews. Neuroscience
影响因子:
--
作者:
Buzsáki G;Anastassiou CA;Koch C
通讯作者:
Koch C
影响因子:
3
作者:
Cottereau, Benoit R.;Ales, Justin M.;Norcia, Anthony M.
通讯作者:
Norcia, Anthony M.
影响因子:
4.3
作者:
Benson NC;Butt OH;Brainard DH;Aguirre GK
通讯作者:
Aguirre GK
影响因子:
5.7
作者:
Di Russo, F;Pitzalis, S;Hillyard, SA
通讯作者:
Hillyard, SA