Mikhailova ES* and Gerasimenko NY
35 healthy subjects (16 males, 19 females) were asked to discriminate the orientation of the gratings having four orientations: Horizontal, vertical, oblique 45° and 135°. No significant behaviour gender differences in performance of orientation discrimination test were observed. Both genders showed a shorter RT for the cardinal orientation recognition in comparison with oblique ones. However, the neural processing of orientations was different across genders. The amplitude of the early ERP components (P100 and N150) measured at early vision posterior areas, demonstrated significant interactions Orientation × Gender. Males display the greater responses to oblique over cardinal orientations which were more significant in the N150 time window while females did not reveal significant differences between the answers elicited by cardinal and oblique orientations. The later ERP components (P300 and Late Negativity) measured at anterior areas did not exhibit distinct gender differences and showed the greater responses to cardinal orientations. The gender specificity of the ‘initial classification’ of basic and oblique orientations may be considered as one of the possible inherent factors of gender differences in some aspects of visual-spatial tasks performance.
Published Date: 2024-01-29; Received Date: 2024-01-01
