Investigating the mechanisms of visually-evoked tactile sensations

Kirsten J. McKenzie, Donna M. Lloyd, Richard J. Brown, Faye Plummer, Ellen Poliakoff

    Research output: Contribution to journalArticlepeer-review

    115 Downloads (Pure)


    When attempting to detect a near-threshold signal, participants often incorrectly report the presence of a signal, particularly when a stimulus in a different modality is presented. Here we investigated the effect of prior experience of bimodal visuotactile stimuli on the rate of falsely reported touches in the presence of a light. In Experiment 1, participants made more false alarms in light-present than light-absent trials, despite having no experience of the experimental visuotactile pairing. This suggests that light-evoked false alarms are a consequence of an existing association, rather than one learned during the experiment. In Experiment 2, we sought to manipulate the strength of the association through prior training, using supra-threshold tactile stimuli that were given a high or low association with the light. Both groups still exhibited an increased number of false alarms during light-present trials, however, the low association group made significantly fewer false alarms across conditions, and there was no corresponding group difference in the number of tactile stimuli correctly identified. Thus, while training did not affect the boosting of the tactile signal by the visual stimulus, the low association training affected perceptual decision-making more generally, leading to a lower number of illusory touch reports, independent of the light. © 2011 Elsevier B.V.
    Original languageEnglish
    Pages (from-to)46-53
    Number of pages7
    JournalActa Psychologica
    Issue number1
    Publication statusPublished - Jan 2012


    • Decision-making
    • Multisensory
    • Perception
    • Somatosensory
    • Touch
    • Vision


    Dive into the research topics of 'Investigating the mechanisms of visually-evoked tactile sensations'. Together they form a unique fingerprint.

    Cite this