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2014 Fiscal Year Final Research Report

A study of swallowing brain function by non-invasive swallowing observation device

Research Project

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Project/Area Number 24650328
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Rehabilitation science/Welfare engineering
Research InstitutionPrefectural University of Hiroshima

Principal Investigator

IMAIZUMI Satoshi  県立広島大学, 保健福祉学部, 教授 (80122018)

Co-Investigator(Kenkyū-buntansha) HAJI Tomoyuki  県立広島大学, 保健福祉学部, 教授 (20145147)
NAKAMURA Aya  県立広島大学, 保健福祉学部, 助教 (10709629)
Project Period (FY) 2012-04-01 – 2015-03-31
Keywords摂食嚥下障害 / 先行期 / 認知期 / 嚥下反射 / 嚥下音 / 非侵襲的検査 / 誤嚥 / 摂食嚥下リハビリテーション
Outline of Final Research Achievements

Possible effects of auditory verbal cues on flavor perception and swallow physiology for younger and elder participants were analyzed. Apple juice, grass juice, and water were ingested with or without auditory verbal cues. Flavor perception and ease of swallowing were measured using a visual analog scale, and swallow physiology by surface electromyography and cervical auscultation. The auditory verbal cues had significant effects on flavor and ease of swallowing as well as on swallow physiology. The taste score significantly increased when the participant’s anticipation was primed by accurate auditory verbal cues, while the ease of swallowing score significantly decreased when the anticipation was contradicted. Regardless of age, the maximum suprahyoid muscle activity significantly decreased when a beverage was ingested without auditory verbal cues. These results suggest that auditory verbal cues can improve the perceived flavor of beverages and swallow physiology.

Free Research Field

摂食嚥下障害学

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Published: 2016-06-03  

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