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Related Experiment Video

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Frame-by-Frame Video Analysis of Idiosyncratic Reach-to-Grasp Movements in Humans
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Interaction in planning vocalizations and grasping.

Mikko Tiainen1, Kaisa Tiippana1, Martti Vainio2

  • 1a Division of Cognitive and Neuropsychology , Institute of Behavioural Sciences, University of Helsinki , Helsinki , Finland.

Quarterly Journal of Experimental Psychology (2006)
|June 3, 2016
PubMed
Summary
This summary is machine-generated.

This study reveals a link between hand grips and speech sounds, showing that preparing a grip primes related vocal responses. This suggests shared brain networks for grasping and articulation.

Keywords:
Action planningGraspingLanguage evolutionSpeech

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Area of Science:

  • Cognitive Neuroscience
  • Speech Motor Control
  • Action Perception

Background:

  • Previous research established a congruency effect between manual grasping and syllable articulation in reaction times.
  • Specific grips (power vs. precision) correlate with articulatory features (e.g., tongue body, mouth aperture).

Purpose of the Study:

  • To determine if the manual-vocal congruency effect extends to vocal responses.
  • To explore the role of action selection processes in this effect.
  • To investigate if grip preparation alone influences articulatory responses.

Main Methods:

  • Participants performed manual grasping and vocalization tasks.
  • Reaction times for both manual and vocal responses were measured.
  • Experimental conditions manipulated prior knowledge of grip and syllable, and grip preparation.

Main Results:

  • The congruency effect was observed in both vocal and manual responses, irrespective of prior knowledge.
  • The effect persisted in vocal responses even when only grip planning occurred, without execution.
  • Results indicate minimal involvement of explicit action selection processes.

Conclusions:

  • Articulation and grasping share partially overlapping neural networks.
  • Motor planning for grasping can directly influence speech production.
  • The findings support an embodied cognition perspective on language and action.