September 2019
Volume 19, Issue 10
Open Access
Vision Sciences Society Annual Meeting Abstract  |   September 2019
Motion perception, form discrimination and visual motor integration abilities in mTBI patients
Author Affiliations & Notes
  • Mariagrazia Benassi
    Department of Psychology, University of Bologna
  • Davide Frattini
    Department of Psychology, University of Bologna
  • Roberto Bolzani
    Department of Psychology, University of Bologna
  • Sara Giovagnoli
    Department of Psychology, University of Bologna
  • Tony Pansell
    Department of Clinical Neuroscience, Karolinska Institutet
Journal of Vision September 2019, Vol.19, 278a. doi:https://doi.org/10.1167/19.10.278a
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      Mariagrazia Benassi, Davide Frattini, Roberto Bolzani, Sara Giovagnoli, Tony Pansell; Motion perception, form discrimination and visual motor integration abilities in mTBI patients. Journal of Vision 2019;19(10):278a. doi: https://doi.org/10.1167/19.10.278a.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Although former studies demonstrated that patients with mild traumatic brain injuries (mTBI) have abnormal visual motion sensitivityand motor difficulties (Spiegel et al., 2016), little is known about the effect of mTBI on form perception and visual motor integration. The aim of this study was to evaluate temporal resolution, motion, form, form-from motion perception and visual motor integration in mTBI patients. Eleven mTBI patients (2 females, mean age 22.8 years) and ten age-matched controls (4 females) participated in the study. Motion perception was evaluated with the motion coherence test (MC). Temporal resolution was evaluated with the critical flicker fusion test (CFF). Form discrimination was assessed with form coherence test (FC) and form-from-motion test (FFM). VMI-6 was used to evaluate visual motor integration. The MC, FC, and FFM were displayed in a foveal position, while CFF was assessed in central and peripheral positions. Generalized linear models evidenced differences between mTBI and controls in CFF test and in VMI tasks. In details, in CFF test the mTBI patients had lower performances in peripheral temporal resolution processing as compared to controls and in VMI-6 test they had lower motor and visual motor integration abilities. No difference was found between mTBI patients and controls in MC, FC, and FFM tasks showing similar performance in mTBI and controls in motion, form and form from motion perception. These results demonstrated that mTBI is associate with fine motor and visual motor integration deficits and confirmed anomalous temporal resolution in peripheral vision. Although we failed to find a more generalized visual perception impairment in motion and form perception, caution is needed in interpreting this result because of the small sample size.

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