کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6032755 | 1188742 | 2012 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Single-trial magnetoencephalography signals encoded as an unfolding decision process
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب شناختی
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چکیده انگلیسی
The model of a stochastic decision process unfolding in motor and premotor regions of the brain was encoded in single-trial magnetoencephalographic (MEG) recordings while ten healthy subjects performed a sensorimotor Reaction Time (RT) task. The duration of single-trial MEG signals preceding the motor response, recorded over the motor cortex contralateral to the responding hand, co-varied with RT across trials according to the model's prediction. Furthermore, these signals displayed the same properties of a “rising-to-a-fixed-threshold” decision process as posited by the model and observed in the activity of single neurons in the primate cortex. The present findings demonstrate that non-averaged, single-trial MEG recordings can be used to test models of cognitive processes, like decision-making, in humans.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NeuroImage - Volume 59, Issue 4, 15 February 2012, Pages 3604-3610
Journal: NeuroImage - Volume 59, Issue 4, 15 February 2012, Pages 3604-3610
نویسندگان
Nikolaos Smyrnis, Dimitris S. Mylonas, Roozbeh Rezaie, Constantinos I. Siettos, Errikos Ventouras, Periklis Y. Ktonas, Ioannis Evdokimidis, Andrew C. Papanicolaou,