Modulation of cortical activity in response to visually induced postural perturbation: combined VR and EEG study.
Modulation of cortical activity in response to visually induced postural perturbation: combined VR and EEG study.
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DOI：
10.1016/j.neulet.2013.05.001
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发表时间：
2013-06-28
影响因子：
2.5
通讯作者：
Newell KM
中科院分区：
文献类型：
--
作者：
Slobounov SM;Teel E;Newell KM
EEG研究有证据表明，与自我启动和/或可预测的条件相比，站立姿势的意外扰动会诱导皮质活动的差异调制。然而，全身姿势反应的神经相关的视觉引起的扰动站立姿势尚未检查。在这里，我们采用了一种新的实验范式，通过结合虚拟现实（VR）和EEG的措施，检查视觉诱导扰动的动态姿势反应的影响。12名没有神经系统疾病和/或骨科损伤病史的宾夕法尼亚州立大学学生运动员参加了这项研究。在空间和时间不可预测和完全可预测的条件下，反应/反应时间测量没有差异（p> 0.05）。然而，在不可预测的姿势扰动发生之前，额叶-中枢EEG θ活动的调制明显更强（p<. 05）。据推测，增强EEG θ在不可预测的条件下，反映了增加的努力，招募额外的大脑资源，以满足需求的姿势任务。
There is evidence from EEG studies that unexpected perturbations to standing posture induce a differential modulation of cortical activity compared to self-initiated and/or predictable conditions. However, the neural correlates of whole body postural response to visually-induced perturbations on standing posture have not been examined. Here we employ a novel experimental paradigm via combined Virtual Reality (VR) and EEG measures to examine the effects of visually induced perturbations on the dynamics of postural responses. Twelve Penn State student-athletes without prior history of neurologic disorders and/or orthopaedic injuries participated in this study. There were no differences in response/reaction time measures between both spatially and temporally unpredictable and fully predictable conditions (p>.05). However, significantly stronger modulation of frontal-central EEG theta activity was present prior to onset of unpredictable postural perturbations (p<. 05). It is postulated that enhanced EEG theta in unpredictable conditions reflects increased effort to recruit additional brain resources to meet the demands of the postural tasks.
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影响因子：
2.4
作者：
Haibach, Pamela S.;Slobounov, Semyon M.;Newell, Karl M.
通讯作者：
Newell, Karl M.
DOI：
10.1016/s0926-6410(00)00009-4
发表时间：
2000-06-01
期刊：
COGNITIVE BRAIN RESEARCH
影响因子：
--
作者：
Slobounov, SM;Fukada, K;Ray, W
通讯作者：
Ray, W
DOI：
10.1089/cpb.2006.9.188
发表时间：
2006-04-01
期刊：
CYBERPSYCHOLOGY & BEHAVIOR
影响因子：
--
作者：
Slobounov, Semyon;Slobounov, Elena;Newell, Karl
通讯作者：
Newell, Karl
影响因子：
4.1
作者：
Gramann, Klaus;Gwin, Joseph T.;Makeig, Scott
通讯作者：
Makeig, Scott
影响因子：
4.7
作者：
Slobounov, S;Hallett, M;Newell, KM
通讯作者：
Newell, KM