AX-CPT任务的电生理反应能区分早期神经退行性疾病吗?Can electrophysiological responses to AX-CPT task differentiate between early stages of neurodegenerative disorders? |
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课程网址: | http://videolectures.net/snc2015_bon_neurodegenerative_disorders/ |
主讲教师: | Jure Bon |
开课单位: | 卢布尔雅那大学 |
开课时间: | 2015-09-07 |
课程语种: | 英语 |
中文简介: | 诱发相关电位(ERP)是认知神经科学研究的一个古老传统,它来源于受试者执行认知任务时的连续脑电图记录。它们特别适合回答认知策略的时间和瞬时变化的问题,同时也要经过大量的数据预处理,以提高信噪比,从而在结果中引入人工模式。AX-CPT是一个复杂的连续性任务,它强调维持语境线索,迫使受试者在不同程度上使用积极或被动的认知策略来成功地保持对刺激的注意力。研究认为,积极和被动的认知风格在个体中共存,并随着认知加工的现状而变化,但由于不同的原因,它们的整体平衡发生了变化,其中老龄化是研究最多的一种。在本研究中,我们试图根据对AX-CPT试验不同部分的反应,将健康年轻受试者样本与健康老年受试者、轻度认知障碍患者、帕金森病患者和与帕金森病相关的轻度认知障碍患者区分开来:短时间和长时间处理和维持线索延迟、抑制或激活对目标的反应。结果将被提出,并讨论将这种特定的ERP纳入疾病相关认知功能下降的多模式整合标志物的可能性。 |
课程简介: | Evoked related potentials (ERP) derived from continuous electroencephalography recording while subjects perform a cognitive task have a long tradition in cognitive neuroscience research. They are specifically well placed to answer questions on timing and momentary changes in cognitive strategies while they are also subjected to a lot of data preprocessing in order to improve signal to noise ratio, which can introduce artifactual patterns in results. AX-CPT is a complex version of a continuous performance task, which puts emphasis on maintenance of contextual cues and forces subjects to use proactive or reactive cognitive strategies to different degrees to successfully maintain their attention to stimuli. It is thought that proactive and reactive cognitive styles coexist in individuals and change according to current circumstances of cognitive processing, while their overall balance shifts due to different reasons, ageing being one of the most researched. In present study we sought to differentiate healthy young subject sample from healthy old subjects and patients with mild cognitive impairment, Parkinson’s disease and mild cognitive impairment related to Parkinson’s disease based on their responses to different parts of the AX-CPT trial: processing and maintaining the cue over short and long delay, inhibiting or activating response to target. Results will be presented and the possibility for the inclusion of this specific ERP in multimodal integrative markers of disease related cognitive decline will be discussed. |
关 键 词: | 反应性认知; 帕金森病; 刺激 |
课程来源: | 视频讲座网 |
数据采集: | 2020-12-21:yxd |
最后编审: | 2020-12-25:chenxin |
阅读次数: | 181 |