耳鸣特别改变了自上而下的注意力执行控制子成分:来自注意力网络任务的证据。
Tinnitus specifically alters the top-down executive control sub-component of attention: evidence from the Attention Network Task.
作者信息
Heeren Alexandre, Maurage Pierre, Perrot Hélène, De Volder Anne, Renier Laurent, Araneda Rodrigo, Lacroix Emilie, Decat Monique, Deggouj Naima, Philippot Pierre
机构信息
Laboratory for Experimental Psychopathology, Psychological Sciences Research Institute, Université Catholique de Louvain, Belgium.
Laboratory for Experimental Psychopathology, Psychological Sciences Research Institute, Université Catholique de Louvain, Belgium; Institute of Neuroscience, Université Catholique de Louvain, Belgium.
出版信息
Behav Brain Res. 2014 Aug 1;269:147-54. doi: 10.1016/j.bbr.2014.04.043. Epub 2014 May 2.
Tinnitus can be defined as the perception of noxious disabling internal sounds in the absence of external stimulation. While most individuals with tinnitus show some habituation to these internal sounds, many of them experience significant daily life impairments. There is now convincing evidence that impairment in attentional processes may be involved in tinnitus, particularly by hampering the habituation mechanism related to the prefrontal cortex activity. However, it is thus still unclear whether this deficit is an alteration of alerting and orienting attentional abilities, or the consequence of more general alteration in the executive control of attention. In the present study, 20 tinnitus patients were compared to 20 matched healthy controls using the Attention Network Test, to clarify which attentional networks, among alerting, orienting, and executive networks, show differences between the groups. The results showed that patients with tinnitus do not present a general attentional deficit but rather a specific deficit for top-down executive control of attention. This deficit was highly correlated with patient characteristics of years of tinnitus duration and the frequency of coping strategies employed to alleviate tinnitus distress in daily life. These findings are discussed in terms of recent neurobiological models suggesting that prefrontal cortex activity might especially be related to tinnitus habituation. Therapeutic perspectives focusing both on rehabilitation of the executive control of attention and neuromodulation are also discussed.
耳鸣可被定义为在没有外部刺激的情况下,对有害的、使人致残的内部声音的感知。虽然大多数耳鸣患者会对这些内部声音产生一定程度的习惯化,但他们中的许多人在日常生活中仍会受到严重影响。现在有令人信服的证据表明,注意力过程的损害可能与耳鸣有关,特别是通过妨碍与前额叶皮质活动相关的习惯化机制。然而,目前仍不清楚这种缺陷是警觉和定向注意力能力的改变,还是注意力执行控制中更普遍改变的结果。在本研究中,使用注意力网络测试将20名耳鸣患者与20名匹配的健康对照进行比较,以明确在警觉、定向和执行网络中,哪些注意力网络在两组之间存在差异。结果表明,耳鸣患者不存在一般的注意力缺陷,而是在自上而下的注意力执行控制方面存在特定缺陷。这种缺陷与耳鸣持续时间和日常生活中用于缓解耳鸣困扰的应对策略频率等患者特征高度相关。根据最近的神经生物学模型对这些发现进行了讨论,该模型表明前额叶皮质活动可能尤其与耳鸣习惯化有关。还讨论了专注于注意力执行控制康复和神经调节的治疗前景。