All Relations between top-down modulation and primary visual cortex

Reference Sentence Publish Date Extraction Date Species
George E C Thomas, Peter Zeidman, Tajwar Sultana, Angeliki Zarkali, Adeel Razi, Rimona S Wei. Changes in both top-down and bottom-up effective connectivity drive visual hallucinations in Parkinson's disease. Brain communications vol 5 issue 1 2023 36601626 we find that visual hallucinators display decreased bottom-up effective connectivity from the lateral geniculate nucleus to primary visual cortex and increased top-down effective connectivity from the left prefrontal cortex to primary visual cortex and the medial thalamus, as compared with non-visual hallucinators. 2023-01-05 2023-01-08 Not clear
Shen Zhang, Jian Ding, Yanni Tu, Qiuyu Zhang, Zheng Ye, Hao Yu, Qingyan Sun, Tianmiao Hu. Modulation of top-down influence affects trafficking of glutamatergic receptors in the primary visual cortex. Biochemical and biophysical research communications vol 632 issue 2022 36191373 modulation of top-down influence affects trafficking of glutamatergic receptors in the primary visual cortex. 2022-10-03 2022-10-10 Not clear
Shen Zhang, Jian Ding, Yanni Tu, Qiuyu Zhang, Zheng Ye, Hao Yu, Qingyan Sun, Tianmiao Hu. Modulation of top-down influence affects trafficking of glutamatergic receptors in the primary visual cortex. Biochemical and biophysical research communications vol 632 issue 2022 36191373 numerous studies indicate that top-down influence plays critical roles in visual perception by enhancing neuronal excitability in the primary visual cortex (v1). 2022-10-03 2022-10-10 Not clear
Shen Zhang, Jian Ding, Yanni Tu, Qiuyu Zhang, Zheng Ye, Hao Yu, Qingyan Sun, Tianmiao Hu. Modulation of top-down influence affects trafficking of glutamatergic receptors in the primary visual cortex. Biochemical and biophysical research communications vol 632 issue 2022 36191373 this study examined changes of excitatory glutamatergic markers in the v1 cortex of cat after top-down influence of cortical area 7 (a7) was modulated by transcranial direct current stimulation (tdcs). 2022-10-03 2022-10-10 Not clear
Feizhen Cao, Ke Zeng, Junmeng Zheng, Linwei Yu, Shen Liu, Lin Zhang, Qiang X. Neural response and representation: Facial expressions in scenes. Psychophysiology vol issue 2022 36114680 taken together, these results suggested that facial expression processing in the visual cortex is modulated by top-down signals. 2022-09-17 2022-09-29 Not clear
Sean Noah, Sreenivasan Meyyappan, Mingzhou Ding, George R Mangu. Anticipatory attention is a stable state induced by transient control mechanisms. Frontiers in human neuroscience vol 16 issue 2022 35937681 these findings support the hypothesis that anticipatory attention involves transient top-down control signals that establish more stable neural states in visual cortex, enabling selective sensory processing. 2022-08-08 2022-08-15 Not clear
Joshua J Foster, Sam Lin. Feature-based attention multiplicatively scales the fMRI-BOLD contrast-response function. The Journal of neuroscience : the official journal of the Society for Neuroscience vol issue 2022 35868860 these findings suggest that attentional effects measured with fmri reflect top-down inputs to visual cortex, rather than the modulation of sensory gain. 2022-07-22 2022-07-25 Not clear
Benoit Le Bec, Xoana G Troncoso, Christophe Desbois, Yannick Passarelli, Pierre Baudot, Cyril Monier, Marc Pananceau, Yves Fr\\xc3\\xa9gna. Horizontal connectivity in V1: Prediction of coherence in contour and motion integration. PloS one vol 17 issue 7 2022 35802625 since it is demonstrated in the anesthetized cat, this novel form of contextual control of the cortical gain and phase is a built-in property in v1, whose expression does not require behavioral attention and top-down control from higher cortical areas. 2022-07-08 2022-07-11 Not clear
Kevin J Norman, Julia Bateh, Priscilla Maccario, Christina Cho, Keaven Caro, Tadaaki Nishioka, Hiroyuki Koike, Hirofumi Morishit. Frontal-Sensory Cortical Projections Become Dispensable for Attentional Performance Upon a Reduction of Task Demand in Mice. Frontiers in neuroscience vol 15 issue 2022 35087372 previous studies have shown that frontal top-down neurons projecting from the anterior cingulate area (aca) to the visual cortex (vis; aca 2022-01-28 2022-02-06 Not clear
Jian Ding, Zheng Ye, Fei Xu, Xiangmei Hu, Hao Yu, Shen Zhang, Yanni Tu, Qiuyu Zhang, Qingyan Sun, Tianmiao Hua, Zhong-Lin L. Effects of top-down influence suppression on behavioral and V1 neuronal contrast sensitivity functions in cats. iScience vol 25 issue 1 2022 35059603 effects of top-down influence suppression on behavioral and v1 neuronal contrast sensitivity functions in cats. 2022-01-21 2022-01-27 Not clear
Jian Ding, Zheng Ye, Fei Xu, Xiangmei Hu, Hao Yu, Shen Zhang, Yanni Tu, Qiuyu Zhang, Qingyan Sun, Tianmiao Hua, Zhong-Lin L. Effects of top-down influence suppression on behavioral and V1 neuronal contrast sensitivity functions in cats. iScience vol 25 issue 1 2022 35059603 to explore the relative contributions of higher-order and primary visual cortex (v1) to visual perception, we compared cats' behavioral and v1 neuronal contrast sensitivity functions (csf) and threshold versus external noise contrast (tvc) functions before and after top-down influence of area 7 (a7) was modulated with transcranial direct current stimulation (tdcs). 2022-01-21 2022-01-27 Not clear
Jian Ding, Zheng Ye, Fei Xu, Xiangmei Hu, Hao Yu, Shen Zhang, Yanni Tu, Qiuyu Zhang, Qingyan Sun, Tianmiao Hua, Zhong-Lin L. Effects of top-down influence suppression on behavioral and V1 neuronal contrast sensitivity functions in cats. iScience vol 25 issue 1 2022 35059603 analysis of tvc functions using the perceptual template model (ptm) indicated that top-down influence of a7 increased both behavioral and v1 neuronal contrast sensitivity by reducing internal additive noise and the impact of external noise. 2022-01-21 2022-01-27 Not clear
Sunyoung Park, John T Serence. Relative precision of top-down attentional modulations is lower in early visual cortex compared to mid- and high-level visual areas. Journal of neurophysiology vol issue 2022 35020526 relative precision of top-down attentional modulations is lower in early visual cortex compared to mid- and high-level visual areas. 2022-01-12 2022-01-14 Not clear
Sunyoung Park, John T Serence. Relative precision of top-down attentional modulations is lower in early visual cortex compared to mid- and high-level visual areas. Journal of neurophysiology vol issue 2022 35020526 however, little is known about the relative precision of top-down attentional modulations in different visual areas, especially compared to the highly precise stimulus-driven responses that are observed in early visual cortex. 2022-01-12 2022-01-14 Not clear
Sunyoung Park, John T Serence. Relative precision of top-down attentional modulations is lower in early visual cortex compared to mid- and high-level visual areas. Journal of neurophysiology vol issue 2022 35020526 while v1 showed the largest relative difference between the precision of top-down attentional modulations and the precision of bottom-up modulations, mid-level areas such as v4 showed relatively smaller differences between the precision of top-down and bottom-up modulations. 2022-01-12 2022-01-14 Not clear
Sunyoung Park, John T Serence. Relative precision of top-down attentional modulations is lower in early visual cortex compared to mid- and high-level visual areas. Journal of neurophysiology vol issue 2022 35020526 v1 vs v4) and the relative precision of top-down and bottom-up modulations suggests that the precision of top-down attentional modulations is limited by the representational fidelity of areas that generate and relay top-down feedback signals. 2022-01-12 2022-01-14 Not clear
Leena Ali Ibrahim, Shuhan Huang, Marian Fernandez-Otero, Mia Sherer, Yanjie Qiu, Spurti Vemuri, Qing Xu, Robert Machold, Gabrielle Pouchelon, Bernardo Rudy, Gord Fishel. Bottom-up inputs are required for establishment of top-down connectivity onto cortical layer 1 neurogliaform cells. Neuron vol 109 issue 21 2021 34478630 here we investigated the contribution of early thalamic inputs onto l1 interneurons for establishment of top-down connectivity in the primary visual cortex. 2021-12-22 2022-01-13 Not clear
Leena Ali Ibrahim, Shuhan Huang, Marian Fernandez-Otero, Mia Sherer, Yanjie Qiu, Spurti Vemuri, Qing Xu, Robert Machold, Gabrielle Pouchelon, Bernardo Rudy, Gord Fishel. Bottom-up inputs are required for establishment of top-down connectivity onto cortical layer 1 neurogliaform cells. Neuron vol 109 issue 21 2021 34478630 our results demonstrate that proper establishment of top-down connectivity in the visual cortex depends critically on bottom-up inputs from the thalamus during postnatal development. 2021-12-22 2022-01-13 Not clear
Chengwen Liu, Fanhua Guo, Chencan Qian, Zihao Zhang, Kaibao Sun, Danny Jj Wang, Sheng He, Peng Zhan. Layer-dependent multiplicative effects of spatial attention on contrast responses in human early visual cortex. Progress in neurobiology vol 207 issue 2021 32818495 using submillimeter-resolution fmri at 7 tesla, we investigated the effects of top-down spatial attention on the contrast responses across different cortical depths in human early visual cortex. 2021-12-17 2022-01-13 Not clear
Thiago Leiros Costa, Johan Wageman. Gestalts at threshold could reveal Gestalts as predictions. Scientific reports vol 11 issue 1 2021 34526565 in addition, the presence of nonlinearities in the psychometric functions suggest differential top-down modulation of the early visual cortex. 2021-11-29 2022-01-14 Not clear
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