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Published Papers 【 display / non-display 】

Published Papers 【 display / non-display 】

• Subjective health awareness and sensory ability of taste and olfaction: A case study of a health promotion class for older people

  Sana Inoue, Junji Watanabe, Yuji Wada

  PLOS ONE   17 ( 10 ) e0275093   2022.10 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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    DOI

• How was the Mahale 50 Exhibition and Symposium Assessed by the General Participants? A Questionnaire Survey

  Sana Inoue, Kazuhiko Hosaka

  Pan Africa News   23 ( 1 ) 5 - 7   2016.06 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

• An observation of a severely disabled infant chimpanzee in the wild and her interactions with her mother

  Takuya Matsumoto, Noriko Itoh, Sana Inoue, Michio Nakamura

  Primates ( Springer Science and Business Media LLC )  57 ( 1 ) 3 - 7   2015.11 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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• Death of the Alpha: Within‐Community Lethal Violence Among Chimpanzees of the Mahale Mountains National Park

  STEFANO S. K. KABURU, SANA INOUE, NICHOLAS E. NEWTON‐FISHER

  American Journal of Primatology ( Wiley )  75 ( 8 ) 789 - 797   2013.06 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

  　View Summary

  Abstract Chimpanzees (Pan troglodytes) are capable of extreme violence. They engage in inter‐group, sometimes lethal, aggression that provides the winners with an opportunity to enlarge their territory, increase their food supply and, potentially, attract more mates. Lethal violence between adult males also occurs within groups but this is rare; to date, only four cases (three observed and one inferred) have been recorded despite decades of observation. In consequence, the reasons for within‐group lethal violence in chimpanzees remain unclear. Such aggression may be rare due to the importance of coalitions between males during inter‐group encounters; cooperation between males is also thought to be key in the defense or advancement of social rank within the group. Previous accounts of within‐group lethal violence concern victims who were low‐ranking males; here we provide the first account of the killing of an incumbent alpha male by a coalition of adult males from the same community. We found no clear evidence that the alpha male's position was under threat during the months before the lethal attack: the male dominance hierarchy was highly stable, with low rates of male–male aggression, and there were no significant changes in social interactions (i.e. grooming and aggression) between the alpha male and the other adult males. Two of the four attackers were former alpha males and were the individuals with whom the victim appeared, in the period preceding his death, to be most strongly affiliated: his most frequent grooming partners and those with whom he spent most time in proximity. The lethal attack triggered a period of instability in the male hierarchy and was likely an opportunistic attempt to seize alpha status by the third‐ranking male. Am. J. Primatol. 75:789–797, 2013. © 2013 Wiley Periodicals, Inc.

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• Correlation between menstrual cycle and cognitive performance in a chimpanzee (Pan troglodytes).

  Sana Inoue, Tetsuro Matsuzawa

  Journal of Comparative Psychology ( American Psychological Association (APA) )  125 ( 1 ) 104 - 111   2011 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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Presentations 【 display / non-display 】

Presentations 【 display / non-display 】

• Origin of captive ruffed lemur's reaction to blue color

  Sana Inoue

  The 76th Annual Meeting of the Japanese Society for Animal Psychology  1900.01  -  1900.01 

• Working Memory of Numerals in Humans and Chimpanzees

  Sana Inoue, Tetsuro Matsuzawa

  22nd Congress of the International Primatological Society  1900.01  -  1900.01 

• Working Memory of Numerals in human children and young chimpanzees

  Sana Inoue

  The International Symposium on Comparative Cognitive Science 2008 Primate origins of human mind  1900.01  -  1900.01 

• Trade-off theory of memory and symbolization in humans and chimpanzees

  Tetsuro Matsuzawa, Sana Inoue

  22nd Congress of the International Primatological Society  1900.01  -  1900.01 

• Numerical sequence learning in chimpanzees: a preliminary report

  Sana Inoue

  The 3rd HOPE International workshop "Comparative Cognitive Science: Recent topics of avian and primate species"  1900.01  -  1900.01 

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Grant-in-Aid for Scientific Research 【 display / non-display 】

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• The evolution of the trichromacy in red ruffed lemurs with polymorphic color vision

  Grant-in-Aid for Young Scientists(B)

  Project Year: 2014.04  -  2018.03 

  Investigator(s): INOUE SANA 

  Direct: 3,000,000 (YEN)  Overheads: 3,900,000 (YEN)  Total: 900,000 (YEN)

  　View Summary

  The red ruffed lemur is an unusual primate, where some individuals have dichromatic color vision, while others have trichromacy, and much of their visual abilities remain unknown. This research uses an experimental psychology approach to examine the relationship between cognition and visual mechanisms in the red ruffed lemur in order to assess the evolutionary background of visual cognition why we humans gained trichromacy. We found 1) red ruffed lemurs may have an aversion to the color blue, as demonstrated via a delayed match-to-sample task using a touch-sensitive monitor, 2) lemurs performed better on discrimination tasks that use natural images compared to those that used solid colors or shapes, and 3) lemurs may have long-term memory lasting at least several months, as evidenced by continued high performance in a match-to-sample task after a five-month break. Additional field data about their behaviors in the wild as well as the colors seen in their natural habitat were collected.

• Comparative cognitive developmental approach of working memory in adolescent Chimpanzees

  Grant-in-Aid for Young Scientists(B)

  Project Year: 2009.04  -  2012.03 

  Investigator(s): INOUE Sana 

  Direct: 3,400,000 (YEN)  Overheads: 4,420,000 (YEN)  Total: 1,020,000 (YEN)

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  This research focused on cognition of chimpanzees in adolescent period. It is revealed that cognition in chimpanzees changed according to developmental stages. 1) The learning curve of computer task (simple order task and memory task) elucidated that adolescent chimpanzees showed intermediate score between young and adult. However, performance in adolescent in particular task showed similar pattern to adults. 2) Matured male might be able to recognize menstrual cycle and fertility of females by two-dimensional images using eye-tracking system. These results suggest drastic change of cognition between childhood and adolescent period.

• Comparative cognitive developmental approach of working memory in adolescent Chimpanzees

  Grant-in-Aid for Young Scientists(B)

  Project Year: 2009.04  -  2012.03 

  Investigator(s): INOUE Sana 

  Direct: 3,400,000 (YEN)  Overheads: 4,420,000 (YEN)  Total: 1,020,000 (YEN)

  　View Summary

  This research focused on cognition of chimpanzees in adolescent period. It is revealed that cognition in chimpanzees changed according to developmental stages. 1) The learning curve of computer task (simple order task and memory task) elucidated that adolescent chimpanzees showed intermediate score between young and adult. However, performance in adolescent in particular task showed similar pattern to adults. 2) Matured male might be able to recognize menstrual cycle and fertility of females by two-dimensional images using eye-tracking system. These results suggest drastic change of cognition between childhood and adolescent period.

Media Coverage 【 display / non-display 】

Media Coverage 【 display / non-display 】

• チンパンジー アイたちが教えてくれた～ヒトは想像の翼を広げる～  TV or radio program

  NHK  NHK総合  2016.5

  Author： Other 

• チンパンジーとボノボ 似ているのに性格は正反対  Newspaper, magazine

  朝日新聞  朝日新聞  朝刊30面（科学の扉）  2015.1

  Author： Other