The asymmetrical effect of leftward and rightward prisms on intact visuospatial cognition

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
Selene SchintuAlessandro Farnè

Abstract

Rightward prismatic adaptation (RPA) can reduce neglect symptoms in patients whereas adaptation to leftward deviating prisms (LPA) can induce neglect-like behavior in healthy subjects. One influential anatomo-functional model of prismatic adaptation (PA) postulates that it inhibits activity of the posterior parietal cortex (PPC) contralateral to the prismatic deviation. By hypo-activating the PPC and thus eventually acting on interhemispheric balance, both LPA and RPA could possibly affect visuospatial perception in healthy subjects, however, such behavioral modulation has seldom been reported after RPA. In the light of recent evidence showing that LPA-induced visuospatial shift need time to develop we hypothesized that RPA might induce significant changes in visuospatial cognition on a longer time scale. We thus assessed the Landmark task, as well as sensorimotor aftereffects, several times over 8 h after a single session of either LPA or RPA. In agreement with previous reports, sensorimotor effects were symmetrical and long-lasting, with both LPA and RPA inducing shifts of comparable amplitudes in the direction opposite to the deviation that lasted up to 8 h. Visuospatial cognition assessed by Landmark performance, was also s...Continue Reading

Citations

Apr 25, 2018·Journal of Clinical and Experimental Neuropsychology·Aleksandra MańkowskaKenneth M Heilman
Sep 26, 2020·Frontiers in Psychology·Yong-Chun CaiLi-Juan Luo
Jan 8, 2021·Neuropsychological Rehabilitation·Alexia BourgeoisRadek Ptak
Nov 7, 2018·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Selene SchintuEric M Wassermann
Apr 2, 2021·Scientific Reports·Patrizia TurrizianiMassimiliano Oliveri
Dec 1, 2018·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Roberta RonchiGiuseppe Vallar
Dec 7, 2018·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Filomena Anelli, Francesca Frassinetti
May 28, 2019·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Alessio FacchinAlessandro Farnè
May 15, 2021·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Axel D VittersøJanet H Bultitude
Dec 19, 2017·Neuropsychologia·Pierre PetitetJacinta O'Shea

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