A novel device for the study of somatosensory information processing.
A novel device for the study of somatosensory information processing.
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DOI：
10.1016/j.jneumeth.2011.11.007
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发表时间：
2012-03-15
影响因子：
3
通讯作者：
Tommerdahl, Mark
中科院分区：
文献类型：
--
作者：
Holden, Jameson K.;Nguyen, Richard H.;Francisco, Eric M.;Zhang, Zheng;Dennis, Robert G.;Tommerdahl, Mark
目前对皮肤施加多部位振动刺激的方法通常涉及使用多个单独的振动触觉刺激器。这种安排的局限性包括难以定位刺激以及确保刺激以同步和深思熟虑的方式传递。在此之前，我们报道了一种用于解决这些问题的双向触觉刺激器。由于这种新型刺激器的成功和该设备固有的局限性，我们设计并制造了一种四位点刺激器，它比以前的版本提供了许多优点。首先，该设备可以刺激四个独立的皮肤部位，主要用于刺激手指尖端。其次，探针尖端的位置已经重新设计，以提供更好的符合人体工程学的手放置。第三，该设备比之前报道的刺激器便携得多。第四，刺激头在桌子或表面上的占地面积要小得多。为了证明该设备在四个独立部位提供触觉刺激的能力，在存在和不存在条件刺激的情况下，对17名健康对照受试者进行了手指失认症协议。研究表明，与失认症测试同时进行的振动触觉条件刺激的振幅增加，数字识别的不准确性增加，特别是在数字D3和D4。结果与先前的研究一致，即相邻和近相邻皮层集合与条件刺激同步影响TOJ表现（Tommerdahl et al., 2007）。
Current methods for applying multi-site vibratory stimuli to the skin typically involve the use of multiple, individual vibrotactile stimulators. Limitations of such an arrangement include difficulty with both positioning the stimuli as well as ensuring that stimuli are delivered in a synchronized and deliberate manner. Previously, we reported a two-site tactile stimulator that was developed in order to solve these problems. Due to both the success of that novel stimulator and the limitations that were inherent in that device, we designed and fabricated a four-site stimulator that provides a number of advantages over the previous version. First, the device can stimulate four independent skin sites and is primarily designed for stimulating the digit tips. Second, the positioning of the probe tips has been re-designed to provide better ergonomic hand placement. Third, the device is much more portable than the previously-reported stimulator. Fourth, the stimulator head has a much smaller footprint on the table or surface where it resides. To demonstrate the capacity of the device for delivering tactile stimulation at four independent sites, a finger agnosia protocol, in the presence and absence of conditioning stimuli, was conducted on seventeen healthy control subjects. The study demonstrated that with increasing amplitudes of vibrotactile conditioning stimuli concurrent with the agnosia test, inaccuracies of digit identification increased, particularly at digits D3 and D4. The results are consistent with prior studies that implicated synchronization of adjacent and near-adjacent cortical ensembles with conditioning stimuli in impacting TOJ performance (Tommerdahl et al., 2007).
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影响因子：
2.5
作者：
Friedman, Robert M.;Chen, Li Min;Roe, Anna W.
通讯作者：
Roe, Anna W.
DOI：
10.1186/1744-9081-1-18
发表时间：
2005-10-10
期刊：
Behavioral and brain functions : BBF
影响因子：
--
作者：
Tannan V;Dennis RG;Tommerdahl M
通讯作者：
Tommerdahl M
影响因子：
2.5
作者：
MOUNTCASTLE, VB;TALBOT, WH;HYVARINEN, J
通讯作者：
HYVARINEN, J
影响因子：
3
作者：
Tannan, V;Dennis, R;Tommerdahl, M
通讯作者：
Tommerdahl, M
影响因子：
2.9
作者：
Tannan, Vinay;Whitsel, Barry L.;Tornmerdahl, Mark A.
通讯作者：
Tornmerdahl, Mark A.