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Error Awareness and Apathy in Moderate-to-Severe Traumatic Brain Injury.

机译:中度至重度创伤性脑损伤的错误意识和冷漠。

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摘要

Moderate-to-severe traumatic brain injury (M/S TBI) is a growing public health concern with significant impact on the cognitive functioning of survivors. Cognitive control and deficits in awareness have been linked to poor recovery and rehabilitation outcomes. One way to research cognitive control is through awareness of errors using electroencephalogram and event-related potentials (ERPs). Both the error-related negativity and the post-error positivity components of the ERP are linked to error awareness and cognitive control processes. Attentional capacity and levels of apathy influence error awareness in those with M/S TBI. There are strong links between awareness, attention, and apathy. However, limited research has examined the role of attention, awareness, and apathy using electrophysiological indices of error awareness to further understand cognitive control in a M/S TBI sample.;The current study sought to elucidate the role of apathy in error awareness in those with M/S TBI. Participants included 75 neurologically-healthy controls (divided randomly into two control groups) and 24 individuals with M/S TBI. All participants completed self-report measures of mood, apathy, and executive functioning, as well as a brief neuropsychological battery to measure attention and cognitive ability. To measure awareness, participants completed the error awareness task (EAT), a modified Stroop go/no-go task. Participants signaled awareness of errors committed on the previous trial.;The M/S TBI group decreased accuracy while improving or maintaining error awareness compared to controls over time. There were no significant between-group differences for ERN and Pe amplitudes. Levels of apathy in the M/S TBI group were included in three multiple regression analyses predicting proportion of unaware errors, ERN amplitude, and Pe amplitude. Apathy was predictive of error awareness, although not in the predicted direction. Major analyses were replicated using two distinct control groups to determine potential sample effects. Results showed consistent results comparing both control groups to a M/S TBI group.;Findings show variable levels of awareness and accuracy over time for those with M/S TBI when compared to controls. Conclusions include varying levels of attention and awareness from the M/S TBI group over time, evidenced by improving awareness of errors when they are happening, but an inability to regulate performance sufficiently to improve accuracy. Levels of apathy are playing a role in error awareness, however, not in predicted directions. The study provides support for the role of attentional impairments in error awareness and encourages future studies to look for varying levels of performance within a given task when using populations linked to elevated levels of apathy and attentional deficits.
机译:中度至重度创伤性脑损伤(M / S TBI)是一个日益严重的公共卫生问题,对幸存者的认知功能产生重大影响。认知控制和意识不足与康复和康复效果差有关。研究认知控制的一种方法是通过使用脑电图和事件相关电位(ERP)来识别错误。 ERP的与错误相关的消极因素和错误后的积极因素都与错误意识和认知控制过程相关。注意能力和冷漠的程度会影响M / S TBI患者的错误意识。意识,注意力和冷漠之间有着密切的联系。然而,有限的研究使用错误意识的电生理指标来检验注意力,意识和冷漠的作用,以进一步了解M / S TBI样本中的认知控制。;当前的研究试图阐明冷漠在那些人的错误意识中的作用。与M / S TBI。参加者包括75名神经健康对照组(随机分为两个对照组)和24名患有M / S TBI的患者。所有参与者都完成了自我报告,包括情绪,冷漠和执行功能的自我测量,以及简短的神经心理测验,以测量注意力和认知能力。为了衡量意识,参与者完成了错误意识任务(EAT),这是经过改进的Stroop可以执行/不执行任务。参与者表示对先前试验中犯下的错误有所了解。与对照组相比,M / S TBI组在提高准确性或保持错误意识的同时降低了准确性。 ERN和Pe振幅之间没有显着的组间差异。 M / S TBI组的冷漠程度包括在三个多元回归分析中,这些预测预测了无意识错误,ERN幅度和Pe幅度的比例。冷漠是对错误意识的预测,尽管不是在预期的方向上。使用两个不同的对照组重复进行主要分析,以确定潜在的样品效果。结果显示,将两个对照组与M / S TBI组进行比较,结果一致。结果显示,与对照组相比,患有M / S TBI的人群随着时间的流逝,意识和准确度各不相同。结论包括随着时间的流逝,M / S TBI小组的关注和意识水平有所不同,这可以通过在错误发生时提高对错误的认识来证明,但是无法充分调节性能以提高准确性。冷漠的程度在错误意识中起作用,但是在预测的方向上却没有。这项研究为注意缺陷在错误认识中的作用提供了支持,并鼓励未来的研究在使用与冷漠和注意缺陷水平升高相关的人群时,在给定任务中寻找不同水平的表现。

著录项

  • 作者

    Logan, Dustin M.;

  • 作者单位

    Brigham Young University.;

  • 授予单位 Brigham Young University.;
  • 学科 Biology Neuroscience.;Psychology Clinical.;Health Sciences Mental Health.
  • 学位 Ph.D.
  • 年度 2015
  • 页码 117 p.
  • 总页数 117
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-17 11:52:36

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