Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2022 May;240(5):1529-1545.
doi: 10.1007/s00221-022-06349-z. Epub 2022 Mar 24.

Do motor plans affect sensorimotor state estimates during temporal decision-making with crossed vs. uncrossed hands? Failure to replicate the dynamic crossed-hand effect

Affiliations

Do motor plans affect sensorimotor state estimates during temporal decision-making with crossed vs. uncrossed hands? Failure to replicate the dynamic crossed-hand effect

Theodore Ching-Kong Cheung et al. Exp Brain Res. 2022 May.

Abstract

Hermosillo et al. (J Neurosci 31: 10019-10022, 2011) have suggested that action planning of hand movements impacts decisions about the temporal order judgments regarding vibrotactile stimulation of the hands. Specifically, these authors reported that the crossed-hand effect, a confusion about which hand is which when held in a crossed posture, gradually reverses some 320 ms before the arms begin to move from an uncrossed to a crossed posture or vice versa, such that the crossed-hand is reversed at the time of movement onset in anticipation of the movement's end position. However, to date, no other study has attempted to replicate this dynamic crossed-hand effect. Therefore, in the present study, we conducted four experiments to revisit the question whether preparing uncrossed-to-crossed or crossed-to-uncrossed movements affects the temporo-spatial perception of tactile stimulation of the hands. We used a temporal order judgement (TOJ) task at different time stages during action planning to test whether TOJs are more difficult with crossed than uncrossed hands ("static crossed-hand effect") and, crucially, whether planning to cross or uncross the hands shows the opposite pattern of difficulties ("dynamic crossed-hand effect"). As expected, our results confirmed the static crossed-hand effect. However, the dynamic crossed-hand effect could not be replicated. In addition, we observed that participants delayed their movements with late somatosensory stimulation from the TOJ task, even when the stimulations were meaningless, suggesting that the TOJ task resulted in cross-modal distractions. Whereas the current findings are not inconsistent with a contribution of motor signals to posture perception, they cast doubt on observations that motor signals impact state estimates well before movement onset.

Keywords: Body schema; Crossed-hand effect; Efference copy; Posture; Spatial; Tactile; Temporal order judgement.

PubMed Disclaimer

Similar articles

Cited by

References

    1. Azañón E, Longo MR, Soto-Faraco S, Haggard P (2010) The posterior parietal cortex remaps touch into external space. Curr Biol 20(14):1304–1309. https://doi.org/10.1016/j.cub.2010.05.063 - DOI - PubMed
    1. Azañón E, Stenner MP, Cardini F, Haggard P (2015) Dynamic tuning of tactile localization to body posture. Curr Biol 25(4):512–517. https://doi.org/10.1016/j.cub.2014.12.038 - DOI - PubMed
    1. Badde S, Heed T (2016) Towards explaining spatial touch perception: Weighted integration of multiple location codes. Cogn Neuropsychol 33(1–2):26–47. https://doi.org/10.1080/02643294.2016.1168791 - DOI - PubMed - PMC
    1. Badde S, Röder B, Heed T (2019) Feeling a touch to the hand on the foot. Curr Biol 29(9):1491-1497.e4. https://doi.org/10.1016/j.cub.2019.02.060 - DOI - PubMed
    1. Botvinick M, Cohen JD (1998) Rubber hand ‘feels’ what eyes see. Nature 391:756 - DOI

LinkOut - more resources