Sounds reset rhythms of visual cortex and corresponding human visual perception.
Sounds reset rhythms of visual cortex and corresponding human visual perception.
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DOI:
10.1016/j.cub.2012.03.025
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发表时间:
2012-05-08
期刊:
影响因子:
9.2
通讯作者:
Thut, Gregor
中科院分区:
文献类型:
--
作者:
Romei, Vincenzo;Gross, Joachim;Thut, Gregor
An event in one sensory modality can phase reset brain oscillations concerning another modality. In principle, this may result in stimulus-locked periodicity in behavioral performance. Here we considered this possible cross-modal impact of a sound for one of the best-characterized rhythms arising from the visual system, namely occipital alpha-oscillations (8–14 Hz). We presented brief sounds and concurrently recorded electroencephalography (EEG) and/or probed visual cortex excitability (phosphene perception) through occipital transcranial magnetic stimulation (TMS). In a first, TMS-only experiment, phosphene perception rate against time postsound showed a periodic pattern cycling at ∼10 Hz phase-aligned to the sound. In a second, combined TMS-EEG experiment, TMS-trials reproduced the cyclical phosphene pattern and revealed a ∼10 Hz pattern also for EEG-derived measures of occipital cortex reactivity to the TMS pulses. Crucially, EEG-data from intermingled trials without TMS established cross-modal phase-locking of occipitoparietal alpha oscillations. These independently recorded variables, i.e., occipital cortex excitability and reactivity and EEG phase dynamics, were significantly correlated. This shows that cross-modal phase locking of oscillatory visual cortex activity can arise in the human brain to affect perceptual and EEG measures of visual processing in a cyclical manner, consistent with occipital alpha oscillations underlying a rapid cycling of neural excitability in visual areas. ► Sound modulates visual perception by phase-locking occipital alpha phase ► Visual perception cocycles with the phase alignment of occipital alpha oscillations ► Alpha rhythm causally shapes perception in a periodic fashion ► Occipital alpha phase indexes excitability of visual areas
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DOI:
10.1523/jneurosci.1338-11.2011
发表时间:
2011-07-06
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Fiebelkorn IC;Foxe JJ;Butler JS;Mercier MR;Snyder AC;Molholm S
通讯作者:
Molholm S
影响因子:
3.8
作者:
Feurra M;Paulus W;Walsh V;Kanai R
通讯作者:
Kanai R
影响因子:
5.3
作者:
Busch, Niko A.;Dubois, Julien;VanRullen, Rufin
通讯作者:
VanRullen, Rufin
影响因子:
5.7
作者:
Hanslmayr, Simon;Aslan, Alp;Baeuml, Karl-Heinz
通讯作者:
Baeuml, Karl-Heinz
影响因子:
3.4
作者:
Klimesch, W;Sauseng, P;Gerloff, C
通讯作者:
Gerloff, C