Abstract
The movements of phonation structures (e.g., tongue) have been shown to facilitate compatible hand movements. For example, reaction time (RT) of precision and power hand grips (made with tips of thumb and finger vs. whole hand) are shortened with the production of syllables that share similar action features (e.g., employing the proximal vs. dorsal portion of the tongue, respectively). This effect is coined the articulation-grip correspondence (AGC) effect. However, it is not known if the AGC effect is due to action facilitation vs. interference, and if such facilitation/ interference is due to covertly or overtly reading the syllable. To answer the associated empirical questions, the present experiment involved participants initiating a precision or power grip without the covert/ overt reading of a syllable, or while covertly or overtly reading the syllable /ti/ or /ka/. In both the covert and overt reading conditions, there were longer RTs for precision grips with the syllable /ka/ than /ti/, and there were longer RTs for power grips with the syllable /ti/. In contrast, the syllable /ti/ or /ka/ did not alter precision or power grip RTs, respectively. These findings support the notion of articulation-grip interference but not facilitation and that such interference can be observed with covert (silent) reading.
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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
Support for this research was provided by grants from the Natural Sciences and Engineering Research Council of Canada (NSERC), the Canadian Foundation for Innovation (CFI), and the Ontario Research Fund (ORF; all granted to L. Tremblay), a NSERC scholarship (granted to J. Hajj), and the University of Toronto.
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JH conceived and designed the research; JH performed experiment; JH analyzed the data; JH and LT interpreted results of experiment; JH prepared figures; JH drafted manuscript; JH, LT, LN, and TW edited and revised manuscript; JH and LT approved final version of manuscript.
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Hajj, J., De Nil, L., Welsh, T. et al. The initiation of a hand grip is delayed by silently reading an incompatible syllable. Psychological Research 87, 2419–2427 (2023). https://doi.org/10.1007/s00426-023-01828-6
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DOI: https://doi.org/10.1007/s00426-023-01828-6