The Effects of Task-Irrelevant Olfactory Information on the Planning and the Execution of Reach-to-Grasp Movements
The Effects of Task-Irrelevant Olfactory Information on the Planning and the Execution of Reach-to-Grasp Movements
复制标题
与任务无关的嗅觉信息对抓握动作的规划和执行的影响
DOI：
10.1007/s12078-009-9039-3
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发表时间：
2009
影响因子：
1
通讯作者：
U. Castiello
中科院分区：
文献类型：
--
作者：
Federico Tubaldi;C. Ansuini;R. Tirindelli;U. Castiello
以往的证据表明，当伸手抓住目标物体时，视觉或嗅觉通道中呈现的非目标无关信息(即干扰物)的存在决定了对时间参数(如反应时间和运动时间)以及运动运动学的显著干扰效应。虽然对“视觉”干扰物的研究也表明，当参与者事先知道目标时，这种干扰效应就会消失，但嗅觉干扰物的这一方面还有待研究。因此，在这里，我们要求参与者在发出让人想起小物体或大物体的气味后，伸向并抓住一个小的或大的视觉目标。当气味引起的抓握类型与视觉目标的抓握类型不一致时，干扰对触达时程和反应时有明显的影响，但手形的运动学没有改变。本研究表明，当被试事先知道哪个物体是目标时，嗅觉非目标对运动运动学没有影响，但对关键的时间测量，即反应时和到达时间有影响。这些发现是根据当前提出的解释行为控制背后的感觉过程的理论来讨论的。
Previous evidence indicates that, when reaching to grasp a target object, the presence of nontarget irrelevant information (i.e., distractor) presented either in the visual or olfactory modality determines significant interference effects on temporal parameters, such as reaction time and movement time, and on movement kinematics. While research on “visual” distractor has also revealed that such interference effects disappear when prior knowledge about the target is given to participants, this aspect for olfactory distractors has yet to be investigated. Therefore, here we asked participants to reach towards and grasp a small or a large visual target following the delivery of an odor evoking either a small or a large object. When the type of grasp evoked by the odor did not coincide with that for the visual target, interference effects were evident on reach duration and reaction time, but kinematics of hand shaping remained unaltered. This study demonstrates that, when participants knew in advance which object was the target, olfactory nontargets produced no interference effects on movement kinematics, but they did on key temporal measures, i.e., reaction time and reach duration. These findings are discussed in light of current theories put forward to explain the sensory processes underlying the control of action.
DOI：
10.1037/0096-1523.18.4.891
发表时间：
1992-11-01
影响因子：
2.1
作者：
TIPPER, SP;LORTIE, C;BAYLIS, GC
通讯作者：
BAYLIS, GC