English

Abstract

Brain sex does not always match the body sex, which is biologically acquired during intrauterine life and is affected by environmental factors that affect brain wiring developments of life events. The aim of present study was to investigate the neurocognitive functioning which is dependent on brain sex matters rather than the biological sex in normal healthy volunteers. A total of 126 participants were selected who filled and signed a special brain sex matter questionnaire as yes or no, which included a set of some special/specific and general questions. After, completing this questionnaire the participants were divided into four groups, group І: as very male brain sex, group ІІ: as very female brain sex, group ІІІ: as intermediate male brain sex and group ІV: as intermediate female brain sex respectively and then each group was subjected to a neurocognitive test by Leeds psychomotor battery tester. The psychomotor performance task and cortical arousal activity differences between very male brain sex and very female brain sex were found to be significant in total reaction time (TRT) p 0.05, While as, psychomotor performance task and cortical arousal activity differences between very female brain sex and intermediate female brain sex, significant differences were found only in movement reaction time (MRT) between the two groups p=0.005. Based on the finding it can be assumed that biological sex with very male brain sex matter has a superior neurocognitive function.