Space, time, and numbers in the right posterior parietal cortex: Differences between response code associations and congruency effects

NeuroImage
Martin RiemerThomas Wolbers

Abstract

The mental representations of space, time, and number magnitude are inherently linked. The right posterior parietal cortex (PPC) has been suggested to contain a general magnitude system that underlies the overlap between various perceptual dimensions. However, comparative studies including spatial, temporal, and numerical dimensions are missing. In a unified paradigm, we compared the impact of right PPC inhibition on associations with spatial response codes (i.e., Simon, SNARC, and STARC effects) and on congruency effects between space, time, and numbers. Prolonged cortical inhibition was induced by continuous theta-burst stimulation (cTBS), a protocol for transcranial magnetic stimulation (TMS), at the right intraparietal sulcus (IPS). Our results show that congruency effects, but not response code associations, are affected by right PPC inhibition, indicating different neuronal mechanisms underlying these effects. Furthermore, the results demonstrate that interactions between space and time perception are reflected in congruency effects, but not in an association between time and spatial response codes. Taken together, these results implicate that the congruency between purely perceptual dimensions is processed in PPC areas a...Continue Reading

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Citations

Apr 6, 2017·Scientific Reports·Benoît MartinVirginie van Wassenhove
Nov 6, 2018·ELife·Benjamin J De CorteMatthew S Matell
Aug 24, 2019·Psychological Research·Nicolas MartyMicha Pfeuty
Mar 14, 2017·Frontiers in Human Neuroscience·Sertaç ÜstünMetehan Çiçek
Apr 24, 2018·Neuroscience and Biobehavioral Reviews·Elizabeth Y Toomarian, Edward M Hubbard

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