Investigation of the relationship with infrasonic wave and auroral activity in the polar region

The Tenth Symposium on Polar Science/Ordinary sessions: [OS] Space and upper atmospheric sciences, Wed. 4 Dec. /Entrance Hall (1st floor) at National Institute of Polar Research (NIPR

Functional organisation of anterior thoracic stretch receptors in the deep-sea isopod Bathynomus doederleini: Behavioural, morphological and physiological studies

The relationship between segmental mobility and the organisation of thoracic stretch receptors was examined in the deep-sea isopod Bathynomus doederleini, which shows a developed adaptive behaviour during digging. The movements of segments during digging were analysed from video recordings, which showed that a large excursion occurred in the anterior thoracic segments. Dyefills of axons revealed four types of thoracic stretch receptor (TSR): an N-cell type (TSR-1), a differentiated Ncell type (TSR-2), a muscle receptor organ (MRO)-type with a long, single receptor muscle (TSR-3) and an MROtype with a short, single receptor muscle (TSR-4 to TSR-7). Physiologically, TSR-1 and TSR-2 are tonic-type stretch receptors. TSR-3 to TSR-7 show two kinds of stretchactivated responses, a tonic response and a phasico-tonic response in which responses are maintained as long as the stretch stimulus is delivered. Both TSR-2, with a long muscle strand, and TSR-3, with a single, long receptor muscle, have a wide dynamic range in their stretchactivated response. In addition, TSR-2 is controlled by an intersegmental inhibitory reflex from TSR-3. These results suggest that, although TSR-1 has no receptor muscle and TSR-2 has a less-differentiated receptor-like muscle, they are fully functional position detectors of segmental movements, as are the MRO-type receptors TSR-3 to TSR-7.</p

堆積物重力流ベッドフォームの形成条件

京都大学新制・課程博士博士(理学)甲第23017号理博第4694号新制||理||1673(附属図書館)京都大学大学院理学研究科地球惑星科学専攻(主査)准教授 成瀬 元, 准教授 堤 昭人, 教授 生形 貴男学位規則第4条第1項該当Doctor of ScienceKyoto UniversityDGA

ニュートリノマヨラナ質量と他の物理の関係

京都大学新制・課程博士博士(理学)甲第22993号理博第4670号新制||理||1670(附属図書館)京都大学大学院理学研究科物理学・宇宙物理学専攻(主査)准教授 吉岡 興一, 教授 田中 貴浩, 准教授 髙山 史宏学位規則第4条第1項該当Doctor of ScienceKyoto UniversityDFA