A research group led by Professor Ryohei Sato of Kitasato University and former Professor Hiroko Fujiwara of the Faculty of Science, Japan Women's University (currently Faculty of Human Sciences, University of Human Arts and Sciences) discovered that Sekisei Inco has gender differences in both behavior and brain working style. Did.This study is the first report in the world of birds showing a gender difference in cerebral hemisphere dominance in a region similar to the human language field of the avian cerebrum.

 Among birds, parrots, sparrows, and hummingbirds have vocal learning abilities and are considered to be excellent models for biological understanding of human language.Among them, the budgerigar, which is a member of Aum, is said to be an excellent model for understanding human language learning and voice communication learning behavior, such as imitating human language.Therefore, we conducted this study for the purpose of exploring the vocal behavior of paired budgerigars to their spouses and the gender difference in the neural basis of the brain, which is the source of that behavior.

In the study, males and females were artificially paired and bred for 5 weeks, then the pairing was resolved, and the voices of the spouse and non-spouse were alternately heard to compare how to respond.At that time, when examining the area called CMM, which is the higher auditory center, when the spouse's voice was heard, the left and right cerebral hemispheres showed higher activity in females than in the silent state, but in males, the spouse showed higher activity. When I heard the voice of the person, I found that the activity was increased only on the right hemisphere side of the CMM.

 It is known that there are gender differences in language function in the human brain.Therefore, neurobehavioral studies of birds similar to the human sensory language field (Wernicke's field) will lead to the elucidation of the biological basis of gender differences and the lateralization mechanism of the brain found in human language function.Furthermore, elucidating the neural basis of the vocal learning mechanism of budgerigars is expected to contribute to the elucidation of the cause of higher brain dysfunction such as aphasia.

Japan Women's University

Promote diverse education that integrates humanities and sciences, and strengthen the foundation of a women's university

In April 120, which marked the 2021th anniversary of its founding, the four faculties of Home Economics, Literature, Human Society, and Science were integrated into the founding Mejiro Campus. The Faculty of International Cultural Studies (tentative name / notification) will be established in 4, and the Faculty of Architectural Design (tentative name)'will be established in 4 (under planning).

Kitasato University

Comprehensive approach from three fields as a comprehensive university of life science

Kitasato University has various organizations such as hospitals, research institutes, graduate schools, and vocational schools, and is pioneering the frontier of life science step by step with an organic network of "knowledge."Three fields to elucidate life phenomena, "fields for conducting basic research on life science", "fields related to animals, plants and the environment", "human life and health […]

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