Yui Matsumoto

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Mice produce ultrasonic vocalizations (USVs) in several behavioural contexts. In particular, male mice articulate a long series of various sounds to females during courtship behaviour. To determine the relationships between this kind of vocal behaviour and emotion, we examined the lesion effects of the amygdala, an important neural module in emotional(More)
Mice produce ultrasonic vocalizations featuring a variety of syllables. Vocalizations are observed during social interactions. In particular, males produce numerous syllables during courtship. Previous studies have shown that vocalizations change according to sexual behavior, suggesting that males vary their vocalizations depending on the phase of the(More)
The task of collaborative filtering has close relation to co-clustering, in which personalized recommendation is achieved by connecting users with items to be preferred. FCM-type co-clustering extracts user-item co-clusters, in which users are assigned to clusters in an exclusive manner while item partitions are not necessarily exclusive and each item can(More)
Human immunodeficiency virus type 1 (HIV-1) is tropic and pathogenic only for humans, and does not replicate in macaque monkeys routinely used for experimental infections. This specially narrow host range (species tropism) has impeded much the progress of HIV-1/acquired immunodeficiency syndrome (AIDS) basic research. Extensive studies on the underlying(More)
A questionnaire was administered to college students and adult members of society to tap the structure and content of self that are characteristic of Japanese culture. The items measured some of the constructs that presumably characterize self in Japanese culture: namely, "amae" (Doi, 1971), "Japanese ego" (Minami, 1983), and "Kanjinshugi" (Hamaguchi,(More)
announced the appointment of James B. Lewis as its new president. Lewis, who joined the company in June, has been acting as vice president of marketing and sales. Michael Tacelosky, Globalink's past president, remains a significant shareholding member of the board and the executive committee, and will be the technical advisor to the president. Tacelosky(More)
The purpose of the present study was to examine the tacit coordination in interdependent relationships between two persons. Subjects, 320 college students, were asked to complete the questionnaire in supposed interaction situations. It was shown that in the correspondent-similar condition, in which each person knew that another person was doing the same,(More)
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