Cross-modal deactivations during modality-specific selective attention.
Cross-modal deactivations during modality-specific selective attention.
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DOI：
10.1186/1471-2377-8-35
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发表时间：
2008-09-25
期刊：
影响因子：
2.6
通讯作者：
Laurienti PJ
中科院分区：
文献类型：
--
作者：
Mozolic JL;Joyner D;Hugenschmidt CE;Peiffer AM;Kraft RA;Maldjian JA;Laurienti PJ
已知在一种感觉模态中处理刺激会导致对其他感觉特异性皮层的抑制。此外，行为实验表明，注意特定的感觉方式的主要后果是在无人看管的感觉方式较差的任务性能。本研究的目的是确定如何集中注意力的听觉或视觉形式的影响皮层区域的神经活动负责处理刺激的无人值守的方式。在15名完成线索检测范式的参与者中收集功能MRI数据。这项任务使我们能够评估特定于模态的注意力的影响，无论是在存在和不存在的目标，在出席的模态。这个实验的结果表明，注意到一个单一的感觉模态可能会导致大脑皮层区域的活动减少，这些区域处理来自无人看管的感觉模态的信息（跨模态失活）。注意力的影响可能是加性的刺激驱动的影响与最大的失活被观察到在特定于模态的选择性注意，在该模态的刺激的存在下。通道特异性选择性注意导致未被注意的感觉通道的行为减少。这里提出的成像结果提供了一个神经签名（跨模态失活）模态特定的选择性注意。
Processing stimuli in one sensory modality is known to result in suppression of other sensory-specific cortices. Additionally, behavioral experiments suggest that the primary consequence of paying attention to a specific sensory modality is poorer task performance in the unattended sensory modality. This study was designed to determine how focusing attention on the auditory or visual modality impacts neural activity in cortical regions responsible for processing stimuli in the unattended modality. Functional MRI data were collected in 15 participants who completed a cued detection paradigm. This task allowed us to assess the effects of modality-specific attention both during the presence and the absence of targets in the attended modality. The results of this experiment demonstrate that attention to a single sensory modality can result in decreased activity in cortical regions that process information from an unattended sensory modality (cross-modal deactivations). The effects of attention are likely additive with stimulus-driven effects with the largest deactivations being observed during modality-specific selective attention, in the presence of a stimulus in that modality. Modality-specific selective attention results in behavioral decrements in unattended sensory modalities. The imaging results presented here provide a neural signature (cross-modal deactivation) for modality-specific selective attention.
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影响因子：
1.7
作者：
Grady, CL;VanMeter, JW;Rauschecker, JP
通讯作者：
Rauschecker, JP
影响因子：
2.5
作者：
Foxe, JJ;Wylie, GR;Murray, MM
通讯作者：
Murray, MM
影响因子：
2.6
作者：
Hopfinger, JB;Woldorff, MG;Mangun, GR
通讯作者：
Mangun, GR
DOI：
10.1073/pnas.92.13.5969
发表时间：
1995-06-20
影响因子：
11.1
作者：
KAWASHIMA, R;OSULLIVAN, BT;ROLAND, PE
通讯作者：
ROLAND, PE
影响因子：
5.7
作者：
Johnson, Jennifer Adrienne;Zatorre, Robert J.
通讯作者：
Zatorre, Robert J.