Auditory information processing mechanism by electrocorticography analysis

2022 Fiscal Year Final Research Report

• Project/Area Number: 19K20648
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 90030:Cognitive science-related
• Research Institution: Jichi Medical University
• Principal Investigator: Ishishita Yohei 自治医科大学, 医学部, 講師 (30835632)
• Project Period (FY): 2019-04-01 – 2023-03-31
• Keywords: 聴覚情報処理 / 皮質脳波 / 言語機能 / 高周波脳律動

Outline of Final Research Achievements

In order to efficiently process a vast amount of auditory information, it is believed that a mechanism is at work in which auditory information transmitted from the lower auditory cortex is fed back to the lower auditory cortex after being assigned meaning in the higher auditory cortex. In this study, we aimed to elucidate the auditory top-down mechanism by measuring electrocorticograph data obtained from subjects who underwent intracranial electrode implantation while performing an auditory task that reproduced the cocktail party effect. However, although we predicted that the higher auditory cortex would be localized in the frontal lobe and analyzed the data, we were not able to clarify its localization.

Free Research Field

脳神経外科学

Academic Significance and Societal Importance of the Research Achievements

言語によるコミュニケーションは社会生活上必須の能力である。脳神経外科学の観点からは手術における言語機能の温存は極めて重要であり、その解明は長年の脳機能研究の目標である。聴覚情報処理は、言語機能における重要な神経基盤のひとつであるが、未だにその全容は解明されていない。聴覚情報処理機構の解明は、言語機能の仕組みの解明につながる可能性が高く、その学術的意義は高い。