Connectivity Reveals Sources of Predictive Coding Signals in Early Visual Cortex During Processing of Visual Optic Flow
Connectivity Reveals Sources of Predictive Coding Signals in Early Visual Cortex During Processing of Visual Optic Flow
复制标题
连接性揭示了视觉光流处理过程中早期视觉皮层中预测编码信号的来源
DOI:
10.1093/cercor/bhw136
复制
发表时间:
2017
期刊:
影响因子:
3.7
通讯作者:
Bartels A
中科院分区:
文献类型:
--
作者:
Schindler A;Bartels A
Superimposed on the visual feed-forward pathway, feedback connections convey higher level information to cortical areas lower in the hierarchy. A prominent framework for these connections is the theory of predictive coding where high-level areas send stimulus interpretations to lower level areas that compare them with sensory input. Along these lines, a growing body of neuroimaging studies shows that predictable stimuli lead to reduced blood oxygen level-dependent (BOLD) responses compared with matched nonpredictable counterparts, especially in early visual cortex (EVC) including areas V1–V3. The sources of these modulatory feedback signals are largely unknown. Here, we re-examined the robust finding of relative BOLD suppression in EVC evident during processing of coherent compared with random motion. Using functional connectivity analysis, we show an optic flow-dependent increase of functional connectivity between BOLD suppressed EVC and a network of visual motion areas including MST, V3A, V6, the cingulate sulcus visual area (CSv), and precuneus (Pc). Connectivity decreased between EVC and 2 areas known to encode heading direction: entorhinal cortex (EC) and retrosplenial cortex (RSC). Our results provide first evidence that BOLD suppression in EVC for predictable stimuli is indeed mediated by specific high-level areas, in accord with the theory of predictive coding.
登录
查看更多内容
影响因子:
--
作者:
Fattori, Patrizia;Pitzalis, Sabrina;Galletti, Claudio
通讯作者:
Galletti, Claudio
DOI:
10.1093/cercor/bhr154
发表时间:
2012-04
期刊:
Cerebral cortex (New York, N.Y. : 1991)
影响因子:
--
作者:
Fischer E;Bülthoff HH;Logothetis NK;Bartels A
通讯作者:
Bartels A
DOI:
10.1073/pnas.1102984108
发表时间:
2011-07-12
影响因子:
11.1
作者:
Arnoldussen, David Mattijs;Goossens, Jeroen;van den Berg, Albert V.
通讯作者:
van den Berg, Albert V.
影响因子:
3.7
作者:
Engel, SA;Glover, GH;Wandell, BA
通讯作者:
Wandell, BA
影响因子:
9.2
作者:
Wall, Matthew B.;Smith, Andrew T.
通讯作者:
Smith, Andrew T.