Action sharpens sensory representations of expected outcomes.
Action sharpens sensory representations of expected outcomes.
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DOI：
10.1038/s41467-018-06752-7
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发表时间：
2018-10-16
影响因子：
16.6
通讯作者：
Press C
中科院分区：
文献类型：
--
作者：
Yon D;Gilbert SJ;de Lange FP;Press C
当我们采取行动时，我们会预测其可能的后果。行动控制的主导模型表明，这些预测被用来“取消”预期结果的感知处理。然而，在行动之外开发的感官认知的规范贝叶斯模型表明，预期的感官信号不会被取消，而是以更高的保真度（锐化）表示。在这里，我们在功能磁共振成像实验中区分了这些模型，参与者在观察化身手的运动的同时执行手部动作（食指与小指的运动）。与锐化描述一致，当手部动作（食指与小指）与动作一致时，可以更准确地读出它们，并且这些解码增强伴随着体素中远离而不是朝向预期刺激的活动受到抑制。因此，与主导行为控制模型不一致的是，这些数据表明感觉运动预测增强了预期的感觉表征，促进了对行为结果的真实感知。我们的大脑会预测我们采取的行动可能产生的感官后果；一种理论认为这些感官反应被抑制，但另一种理论认为它们被强化。在这里，作者使用功能磁共振成像证据展示了与手部运动的感官后果的锐化解释一致的证据。
When we produce actions we predict their likely consequences. Dominant models of action control suggest that these predictions are used to ‘cancel’ perceptual processing of expected outcomes. However, normative Bayesian models of sensory cognition developed outside of action propose that rather than being cancelled, expected sensory signals are represented with greater fidelity (sharpened). Here, we distinguished between these models in an fMRI experiment where participants executed hand actions (index vs little finger movement) while observing movements of an avatar hand. Consistent with the sharpening account, visual representations of hand movements (index vs little finger) could be read out more accurately when they were congruent with action and these decoding enhancements were accompanied by suppressed activity in voxels tuned away from, not towards, the expected stimulus. Therefore, inconsistent with dominant action control models, these data show that sensorimotor prediction sharpens expected sensory representations, facilitating veridical perception of action outcomes. Our brains predict the likely sensory consequences of actions we take; one theory is that these sensory responses are suppressed, but another theory is that they are sharpened. Here, the authors show using fMRI evidence consistent with the sharpening account for sensory consequences of hand movements.
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DOI：
10.1093/cercor/bhn161
发表时间：
2009-05
期刊：
Cerebral cortex (New York, N.Y. : 1991)
影响因子：
--
作者：
den Ouden HE;Friston KJ;Daw ND;McIntosh AR;Stephan KE
通讯作者：
Stephan KE
DOI：
10.1098/rstb.2005.1622
发表时间：
2005-04-29
影响因子：
6.3
作者：
Friston, KJ
通讯作者：
Friston, KJ
影响因子：
5.3
作者：
Alink, Arjen;Schwiedrzik, Caspar M.;Muckli, Lars
通讯作者：
Muckli, Lars
影响因子：
16.2
作者：
Kok, Peter;Jehee, Janneke F. M.;de Lange, Floris P.
通讯作者：
de Lange, Floris P.
影响因子：
5.7
作者：
Allefeld, Carsten;Goergen, Kai;Haynes, John-Dylan
通讯作者：
Haynes, John-Dylan