Top-down modulation of the auditory steady-state response in a task-switch paradigm.
Top-down modulation of the auditory steady-state response in a task-switch paradigm.
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DOI：
10.3389/neuro.09.001.2009
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发表时间：
2009
影响因子：
2.9
通讯作者：
Weisz N
中科院分区：
文献类型：
--
作者：
Müller N;Schlee W;Hartmann T;Lorenz I;Weisz N
听觉选择性注意是感知系统对大量听觉信息进行自上而下选择的重要机制。本研究探讨了注意对听觉稳态反应的影响。这个问题仍然是一个有争议的问题，最近的研究结果指出，一个复杂的模式的注意力对听觉稳态反应（aSSR）的影响。本研究旨在阐明参与同侧和对侧激活出席的声音考虑到半球的差异和调制频率的可能依赖性。为了帮助这一点，一个双耳分听实验设计使用调幅音，同时呈现给左耳和右耳。参与者必须检测提示耳朵中的目标音调，同时使用MEG评估他们的大脑活动。因此，注意力对aSSR的调节可以被揭示出来，有趣的是仅限于左半球和20 Hz的反应：对侧激活增强，而同侧激活减少。因此，我们的研究结果支持并扩展了最近的研究结果，表明听觉注意可以影响aSSR，但仅在特定情况下并且在同侧和对侧激活的不同影响的复杂模式下。
Auditory selective attention is an important mechanism for top-down selection of the vast amount of auditory information our perceptual system is exposed to. In the present study, the impact of attention on auditory steady-state responses is investigated. This issue is still a matter of debate and recent findings point to a complex pattern of attentional effects on the auditory steady state response (aSSR). The present study aimed at shedding light on the involvement of ipsilateral and contralateral activations to the attended sound taking into account hemispheric differences and a possible dependency on modulation frequency. In aid of this, a dichotic listening experiment was designed using amplitude-modulated tones that were presented to the left and right ear simultaneously. Participants had to detect target tones in a cued ear while their brain activity was assessed using MEG. Thereby, a modulation of the aSSR by attention could be revealed, interestingly restricted to the left hemisphere and 20 Hz responses: contralateral activations were enhanced while ipsilateral activations turned out to be reduced. Thus, our findings support and extend recent findings, showing that auditory attention can influence the aSSR, but only under specific circumstances and in a complex pattern regarding the different effects for ipsilateral and contralateral activations.
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影响因子：
5.3
作者：
Bidet-Caulet, Aurelie;Fischer, Catherine;Bertrand, Olivier
通讯作者：
Bertrand, Olivier
影响因子：
2.5
作者：
Skosnik, Patrick D.;Krishnan, Giri P.;O'Donnell, Brian F.
通讯作者：
O'Donnell, Brian F.
DOI：
10.3758/bf03204507
发表时间：
1993-05-01
期刊：
BEHAVIOR RESEARCH METHODS INSTRUMENTS & COMPUTERS
影响因子：
--
作者：
COHEN, J;MACWHINNEY, B;PROVOST, J
通讯作者：
PROVOST, J
影响因子：
2.4
作者：
PICTON, TW;SKINNER, CR;MAISTE, AC
通讯作者：
MAISTE, AC
影响因子：
3.4
作者：
Brancucci, A;Babiloni, C;Rossini, PM
通讯作者：
Rossini, PM