...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Brain research >Effects of adaptation on the capacity to differentiate simultaneously delivered dual-site vibrotactile stimuli.
【24h】

Effects of adaptation on the capacity to differentiate simultaneously delivered dual-site vibrotactile stimuli.

机译：适应对区分同时递送的双部位触觉刺激能力的影响。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The capacity of 20 healthy adult subjects for detecting differences in the amplitude of two simultaneously delivered 25 Hz vibrotactile stimuli was assessed both in the absence and presence of prior exposure to different conditions of adapting stimulation. Results obtained from this study demonstrate that increasing durations of adapting stimulation at one of the two skin sites, in the range of 0.2 to 2.0 s, lead to a systematic and progressive decrease in a subject's ability to accurately discriminate between the two different amplitudes. Delivery of adapting stimuli to both of the sites of skin stimulation prior to simultaneous delivery of the test and standard stimuli, however, leads to an improvement in amplitude discrimination performance-a finding which is consistent with prior published psychophysical studies that demonstrate improvements in discriminatory capacity with much longer durations of adaptation. Striking parallels between the results obtained in this study and those reported in a prior study of the effects of vibrotactile adaptation on the optical response of squirrel monkey contralateral SI cortex to vibrotactile stimulation [Simons, S.B., Chiu, J., Favorov, O.V., Whitsel, B.L., Tommerdahl, M., 2007. Duration-dependent response of SI to vibrotactile stimulation in squirrel monkey. J Neurophysiol. 97, 2121-9, Simons, S.B., Tannan, V., Chiu, J., Favorov, O.V., Whitsel, B.L., Tommerdahl, M., 2005. Amplitude-dependency of response of SI cortex to flutter stimulation. BMC Neurosci. 6, 43] suggest that the perceptual effects detected in this study could be attributable to adaptation-induced alterations of SI response.
机译：在不存在和没有暴露于适应性刺激的不同条件下的情况下，评估了20名健康成人受试者检测两个同时传递的25 Hz触觉刺激幅度差异的能力。从这项研究中获得的结果表明，在两个皮肤部位之一处适应刺激的持续时间的增加（在0.2到2.0 s的范围内）会导致受试者准确区分两种不同幅度的能力的系统性和渐进性降低。在同时进行测试和标准刺激之前，向皮肤刺激的两个部位都提供适应性刺激，但会导致幅度歧视表现的改善，这一发现与先前发表的心理物理学研究一致，该研究表明歧视能力得到了改善适应时间更长。在这项研究中获得的结果与先前关于玻璃触觉适应对松鼠对侧SI皮质对玻璃触觉刺激的光学反应的影响的先前研究中报道的结果之间存在惊人的相似之处[Simons，SB，Chiu，J.，Favorov，OV，Whitsel ，BL，Tommerdahl，M.，2007。SI对松鼠猴对触觉刺激的持续时间依赖性响应。 J神经生理学。 97，2121-9，Simons，S.B.，Tannan，V.，Chiu，J.，Favorov，O.V.，Whitsel，B.L.，Tommerdahl，M.，2005.SI皮质对扑动刺激的响应的幅度依赖性。 BMC Neurosci。 [6，43]认为本研究中检测到的知觉作用可能归因于适应性诱导的SI反应改变。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号