Ty - Jour A2 - Aricō,Pietro Au - Magosso,Elisa Au - De Crescenzio,Francesca Au - Ricci,朱利亚Au - Piastra,Sergio Au - Ursino,Mauro Py - 2019 DA - 2019/06/25 Ti - EEG Alpha Power是通过认知任务期间的注意力变化和虚拟现实浸没过程中的浸入SP - 7051079 VL - 2019 - Ab - α节奏的变化在感知和关注方面具有重要作用。最近,alpha减少已经与外部定向关注有关,尤其是在视觉域中,而alpha增加一直与诸如心理算术的内部处理有关。然而,Alpha振荡的作用以及任务的不同组件(外部刺激的处理,内部操纵/表示和任务需求)仍然不明确地相互作用以影响alpha权力。在这里,我们调查alpha功率如何通过注意力任务不同,这取决于任务难题(更少/更苛刻的任务)和注意方向(内部/外部)。为此目的,我们设计了两个实验,这些实验不同地操纵这些方面。实验1,虚拟现实(VR)外,涉及需要内部和外部注意力组件的两项任务(摄入视觉项目的内部操纵),但具有不同的内部任务需求(算术与读数)。实验2利用VR(模仿飞机舱内部)来操纵注意方向:它仅包括VR浸没的条件,其特征在于,通过视觉外部注意力,以及VR浸没过程中纯粹精神算术任务的条件,需要忽视感觉刺激。结果表明:(1)符合以前的研究,视觉外部注意力导致显着的alpha减少,特别是在平原地区; (2) Alpha decrease was significantly larger during the more demanding arithmetic task, when the task was driven by external visual stimuli; (3) Alpha dramatically increased during the purely mental task in VR immersion, whereby the external stimuli had no relation with the task. Our results suggest that alpha power is crucial to isolate a subject from the environment, and move attention from external to internal cues. Moreover, they emphasize that the emerging use of VR associated with EEG may have important implications to study brain rhythms and support the design of artificial systems. SN - 1687-5265 UR - https://doi.org/10.1155/2019/7051079 DO - 10.1155/2019/7051079 JF - Computational Intelligence and Neuroscience PB - Hindawi KW - ER -