- 著者
- Trung Quang PHAM Takayuki HOSHI Yoshihiro TANAKA Akihito SANO
- 出版者
- 公益社団法人 計測自動制御学会
- 雑誌
- SICE Journal of Control, Measurement, and System Integration (ISSN:18824889)
- 巻号頁・発行日
- vol.10, no.5, pp.426-432, 2017 (Released:2017-09-23)
- 参考文献数
- 24
- 被引用文献数
- 2
Rapid adapting type-I (RA-I) receptor is one type of mechanoreceptors in the human skin. They are believed to be responsible for the detection of stimuli that produce minute skin motion (flutter, slip, microgeometric surface features). The neurophysiological experiments in the paper [J.R. Phillips et al. J. Neurophysiol., Vol. 46, pp. 1192-1203, 1981]raise a question about why the RA-I afferent (innervated into RA-I receptor) fails to represents the stimulus with the width less than 3mm and why their response is anisotropy. It is unclear whether the skin's mechanics or the specific afferent branching of mechanoreceptors themselves are accounted for these phenomena. The present work seeks an interpretation of the neurophysiological phenomena, using a biomechanical finite-element (FE) model with a transduction sub-layer and synthetic sub-model for afferent current. The predicted afferent current matched well with the neural recordings in previous reports. This result suggests a major role of afferent branching in regard to the neurophysiological phenomena.
- 著者
- Hiroshi SHIMIZU Takayuki HOSHI Kenji NAKAMURA Jai-Eok PARK
- 出版者
- 日本生物環境工学会
- 雑誌
- Environmental Control in Biology (ISSN:1880554X)
- 巻号頁・発行日
- vol.53, no.2, pp.85-88, 2015 (Released:2015-06-17)
- 参考文献数
- 9
- 被引用文献数
- 4
An ultrasonic pollination device was developed to achieve effective artificial pollination of strawberries in artificial light type plant factories. A phase array of hundreds of ultrasonic transducers was appropriately controlled and focused on one point in space, and it is possible to generate a force at any position in space. The force was modulated at 30 Hz which is the characteristic frequency of strawberry flower. The pollination experiment was conducted using the strawberry variety F1 Elan (Fragaria×ananassa). The total weight of the strawberries harvested over 22 days was 1.22 kg, and the average weights of individual strawberry fruits were 9.1 g.