- 著者
- Yutaka KOJIMA Toshiki KAMANO Kazuhiro SAKAMOTO Yuichi TOMIKI Masahiko SUGANO Tomoo WATANABE Atsushi OKUZAWA Shinji KASAMAKI Naohito TAKITA
- 出版者
- Japanese College of Surgeons
- 雑誌
- Nihon Gekakei Rengo Gakkaishi (Journal of Japanese College of Surgeons) (ISSN:03857883)
- 巻号頁・発行日
- vol.30, no.4, pp.648-651, 2005-08-30 (Released:2009-08-13)
- 参考文献数
- 18
- 被引用文献数
- 4 6
症例は75歳, 男性。平成16年10月4日, 自慰行為で肛門にヨーグルトの瓶を挿入したところ, 抜去できなくなり10月6日近医受診。摘出困難で10月7日に当院紹介, 同日入院となった。腹部に圧痛, 腹膜刺激症状は認めず, 直腸指診で異物を触知した。腹部単純X線検査で直腸内に径5.7cm長さ10cm大の異物が認められた。入院後, 経肛門的に用手, また大腸内視鏡を用いて摘出を試みたが摘出できず, 腰椎麻酔下で児頭吸引器を使用し経肛門的に摘出した。術後経過良好で翌日退院となった。経肛門的直腸異物の摘出に, 今回用いた児頭吸引器は, 有用な一方法であると考えられた。
1 0 0 0 OA Earthworm individualities when facing a conflict between turn alternation and aversive learning
- 著者
- Tadashi Nakashima Hajime Mushiake Kazuhiro Sakamoto
- 出版者
- The Biophysical Society of Japan
- 雑誌
- Biophysics and Physicobiology (ISSN:21894779)
- 巻号頁・発行日
- vol.15, pp.159-164, 2018 (Released:2018-07-31)
- 参考文献数
- 33
- 被引用文献数
- 2 5
An individual’s personality develops through a combination of experiences and parental inheritance. When faced with a conflict, will an individual take an innate behavior or a learned one? In such situations, individuality will manifest itself. Here, we focused on turn alternation behavior, which is a habitual tendency to turn in the direction opposite the preceding turn, in earthworms (Eisenia fetida) and examined how this behavior is affected by an aversive stimulus. Of 10 earthworms, 3 were affected by the stimulus. Turn alternation deteriorated in two worms, one of which showed anti-turn alternation behavior, whereas the remaining worm showed an enhanced tendency toward turn alternation. Earthworms have a relatively simple nervous system. This study opens the door to investigate the neuronal basis for individuality that emerges between nature and nurture.