Individual differences in subconscious motor control predicted by GABA concentration in SMA.
Individual differences in subconscious motor control predicted by GABA concentration in SMA.
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DOI:
10.1016/j.cub.2010.09.003
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发表时间:
2010-10-12
期刊:
影响因子:
--
通讯作者:
Sumner P
中科院分区:
文献类型:
--
作者:
Boy F;Evans CJ;Edden RA;Singh KD;Husain M;Sumner P
Subliminal visual stimuli affect motor planning but the size of such effects differs greatly between individuals. Here we investigated whether such variation may be related to neurochemical differences between people. Cortical responsiveness is expected to be lower under the influence of more of the main inhibitory neurotransmitter, GABA. Thus we hypothesized that if an individual has more GABA in the supplementary motor area (SMA) – a region previously associated with automatic motor control – this would result in smaller subliminal effects. We measured the reversed masked prime – or negative compatibility – effect, and found that it correlated strongly with GABA concentration, measured with magnetic resonance spectroscopy. This occurred specifically in the SMA region and not in other regions from which spectroscopy measurements were taken. We replicated these results in an independent cohort: more GABA in the SMA region is reliably associated with smaller effect size. These findings suggest that, across individuals, the responsiveness of subconscious motor mechanisms is related to GABA concentration in the SMA.
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DOI:
10.1093/brain/awg067
发表时间:
2003-03
期刊:
Brain : a journal of neurology
影响因子:
--
作者:
Aron AR;Schlaghecken F;Fletcher PC;Bullmore ET;Eimer M;Barker R;Sahakian BJ;Robbins TW
通讯作者:
Robbins TW
影响因子:
3.5
作者:
Di Cristo, G.
通讯作者:
Di Cristo, G.
影响因子:
5.7
作者:
Egner, Tobias;Delano, Margaret;Hirsch, Joy
通讯作者:
Hirsch, Joy
影响因子:
2
作者:
Jaskowski, Piotr
通讯作者:
Jaskowski, Piotr
影响因子:
2.6
作者:
Eimer, M;Schlaghecken, F
通讯作者:
Schlaghecken, F