Department of General Psychology, University of Padua, Via Venezia, 8, 35100 Padova, Italy.
Appetite. 2011 Apr;56(2):249-54. doi: 10.1016/j.appet.2010.12.013. Epub 2010 Dec 21.
Previous research on multisensory integration during goal-directed natural actions reported that visual, proprioceptive, auditory and orthonasal olfactory stimulation has the ability to influence motor control. In this study, we used kinematics to investigate the integration between vision and flavour perception during reach-to-grasp movements. Participants were requested to drink a sip of flavoured solution and then grasp an object presented in central vision. The results indicate that when the objects evoked by the flavour and by the visual target were of a similar size (i.e., large or small) and evoked the same kind of hand shaping in order to be grasped (i.e., congruent condition) facilitation effects emerged. Conversely, when the object evoked by the flavour and by the visual target was of a different size and evoked a different kind of hand shaping in order to be grasped (i.e., incongruent condition) interference effects emerged. Interference effects, however, were only evident for the combination involving a large visual target and a 'small' flavour. When comparing hand kinematics between the congruent and a 'no flavour' condition (i.e., water), facilitation effects emerged in favour of the former condition. Taken together, these results indicate the contribution of complex chemosensory stimuli for the planning and execution of visually guided reach to grasp movements. And, contribute to the current debate regarding the multisensory nature of the sensorimotor transformations underlying motor performance.
先前关于目标导向自然动作中的多感觉整合的研究报告称，视觉、本体感觉、听觉和鼻内嗅觉刺激有能力影响运动控制。在这项研究中，我们使用运动学来研究在伸手抓握动作中视觉和味觉感知之间的整合。要求参与者喝一口调味溶液，然后抓住呈现在中央视觉中的物体。结果表明，当由味道和视觉目标引起的物体具有相似的大小（即大或小）并且为了被抓住而引起相同的手形（即一致条件）时，出现促进效应。相反，当由味道和视觉目标引起的物体具有不同的大小并且为了被抓住而引起不同的手形（即不一致条件）时，出现干扰效应。然而，干扰效应仅在涉及大的视觉目标和“小”味道的组合中明显。当在手的运动学之间比较一致条件和“无味道”条件（即水）时，前者条件出现促进效应。综上所述，这些结果表明复杂的化学感觉刺激对视觉引导的伸手抓握运动的规划和执行有贡献。并有助于当前关于运动表现背后的感觉运动转换的多感觉性质的争论。
