Blar i forfatter Institutt for psykologi "Chu, Xi"

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    • Evaluation of Sexual Behavior in Laboratory vs Seminatural Conditions 

      Chu, Xi; Ågmo, Anders j (Chapter; Bokkapittel, 2023-05-17)
      Sexual behavior is, by necessity, sexually dimorphic. Males transfer sperm to females, whereas females receive sperm from males. Discussions of sex differences in copulatory behavior are consequently trivial. However, the behaviors associated with copulation, for example mate choice or postcopulatory reactions, may well be similar in males and females. Such differences, even subtle, are far easier ...

    • Functions of Vocalization in Sociosexual Behaviors in Rats (Rattus norvegicus) in a Seminatural Environment 

      Chu, Xi; Snoeren, Eelke; Ågmo, Anders j (Journal article; Tidsskriftartikkel, 2017-01-09)
      Both male and female rats produce vocalizations in the presence of a potential sexual partner. In this study, we evaluated the role of vocalizations in sociosexual behaviors in an ecologically valid procedure. Three males and 4 females were housed in a seminatural environment. In each group, 1 or 2 males and females were devocalized, and the other subjects were sham operated. Sociosexual interactions ...

    • Rapid changes in sociosexual behaviors around transition to and from behavioral estrus, in female rats housed in a seminatural environment 

      Le Moene, Olivia; Hernandez-Arteaga, Enrique; Chu, Xi; Ågmo, Anders (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-02-28)
      Gonadally intact female rats display sexual behaviors only during a portion of the estrus cycle. In standard experimental setups, the on- and offset of sexual behavior is gradual. However, in naturalistic settings, it is almost instantaneous. We assessed the changes in sociosexual behaviors at the beginning and end of behavioral estrus in ovariectomized females treated with ovarian hormones. Rats ...

    • Rat ultrasonic vocalizations and novelty-induced social and non-social investigation behavior in a seminatural environment 

      Heinla, Indrek; Chu, Xi; Ågmo, Anders j; Snoeren, Eelke (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-03)
      Although rats are known to emit ultrasonic vocalizations (USVs), it remains unclear whether these calls serve an auditory communication purpose. For USVs to be part of communication, the vocal signals will need to be a transfer of information between two or more conspecifics, and with the possibility to induce changes in the behavior of the recipient. Therefore, the aim of our study was to investigate ...

    • Sexual Incentive Motivation and Copulatory Behavior in Male Rats Treated With the Adrenergic α2-Adrenoceptor Agonists Tasipimidine and Fadolmidine: Implications for Treatment of Premature Ejaculation 

      Lehtimäki, Jyrki; Ventura-aquino, Elisa; Chu, Xi; Paredes, Raul G.; Ågmo, Anders (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-04)
      <p><i>Background:</i> Premature ejaculation is the most common sexual dysfunction in young men, and it often leads to reduced relationship satisfaction and quality of life. <p><i>Aim:</i> To determine the role of central and peripheral α2-adrenoceptors in the control of ejaculation and sexual incentive motivation in rats. <p><i>Methods:</i> Sexual incentive motivation was studied in a large arena ...

    • Sexual incentive motivation and male and female copulatory behavior in female rats given androgen from postnatal day 20 

      Chu, Xi; Snoeren, Eelke; Södersten, Per; Ågmo, Anders j (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-12)
      Masculinization and feminization of rat sexual behavior has been supposed to occur during a short postnatal period. However, much data have made it evident that these processes may continue until adolescence. In the present study, we evaluated whether androgen treatment of females from postnatal day 20 and onwards could alter sexual motivation and behavior in a male direction. Juveniles were ...

    • Studies of sociosexual interactions in rats in an externally valid procedure: Are they relevant for understanding human sexual behavior? 

      Chu, Xi; Ågmo, Anders j (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-05)
      When a prolonged observation of groups of rats in a seminatural environment is used as testing procedure, different behavioral patterns are shown compared with what observed in a pair housed in a small cage. Males and females copulate simultaneously, they show a promiscuously and random copulatory pattern. Females remain completely receptive from the first lordosis displayed in the period of behavioral ...