No sex differences in vection T Seno |
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Institute for Advanced Study, Kyushu University, Japan
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| Although sex differences in spatial cognition have been reported by a number of studies, few studies have investigated possible sex differences in the aspects of basic human perception that support spatial cognition. In this study, we thus focused on investigating possible sex differences in a particular aspect of spatial perception: vection. We measured illusory self-motion perception (vection) strength for 24 males and 22 females. We presented expanding optic flow and induced forward vection for 30 seconds. Optic flow displays (72° × 57°; presented for 30 s) consisted of 16,000 randomly positioned dots. The global dot motion simulated forward-moving self-motion (16 m/s). Participants were asked to press a button when they perceived forward-moving self-motion. Participants rated subjective vection strength using a 101-point rating scale ranging from 0 (no vection) to 100 (very strong vection) after each trial. There was no significant difference in the obtained vection strengths between males and females (t(43.145)=1.15, p=0.25), indicating no sex difference in vection. This result suggests that there are no sex differences in spatial perception. The current finding of no sex differences in spatial perception with respect to vection does not support previously reported sex differences in spatial cognition. |
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