Sökning: "Startle display"

Hittade 5 avhandlingar innehållade orden Startle display.

  1. 1. Antipredator defence in butterflies

    Författare :Martin Olofsson; Christer Wiklund; Graeme Ruxton; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Antipredator defence; Bird; Crypsis; Predator; Predator-prey interaction; Prey-attack behavior; Butterfly; Deimatic behavior; Eyespots; Startle display; zoologisk ekologi; Animal Ecology;

    Sammanfattning : Predation exerts a potent selection mechanism and has resulted in a suite of antipredation adaptations encompassing morphological and behavioral traits in prey. In butterflies, several such traits appear to be directed towards birds which are considered as one of their major predators. LÄS MER

  3. 2. Schizophrenia and Nitric Oxide: Deficits in Information Processing Invetigated in Animal Models

    Författare :Daniel Klamer; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; phencyclidine – nitric oxide – prepulse inhibition – habituation – acoustic startle – cAMP – in vivo microdialysis – NMDA receptor – rat – mouse – schizophrenia;

    Sammanfattning : Rationale: Schizophrenia-like symptoms can be induced in humans by phencyclidine (PCP), a non-competitive antagonist of the N-methyl-D-aspartate (NMDA) receptor. Schizophrenic patients and PCP-treated animals display deficits in pre-attentive information processing, as assessed by e.g. prepulse inhibition of the acoustic startle response. LÄS MER

  4. 3. Hormones, Mood and Cognition

    Författare :Kristiina Kask; Inger Sundström Poromaa; Torbjörn Bäckström; Britth-Marie Landgren; Uppsala universitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; startle response; prepulse inhibition; premenstrual dysphoric disorder; menstrual cycle; pregnancy; postpartum period; episodic memory; semantic memory; working memory; progesterone; estradiol; allopregnanolone.; Obstetrics and gynaecology; Obstetrik och gynekologi;

    Sammanfattning : Ovarian steroid hormones are neuroactive steroids with widespread actions in the brain, and are thus able to influence mood, behavior and cognition. In this thesis the effects of progesterone withdrawal and the direct effects of the progesterone metabolite allopregnanolone are evaluated. LÄS MER

  5. 4. Cognition and social behaviour in schizophrenia: An animal model investigating the potential role of nitric oxide

    Författare :Caroline Wass; Göteborgs universitet; []
    Nyckelord :schizophrenia; cognition; memory; Morris water maze; social function; social interaction; phencyclidine; nitric oxide; L-NAME; rat;

    Sammanfattning : Cognitive deficits are the single strongest predictor of functional outcome in patients with schizophrenia. Furthermore, these deficits are not satisfactorily alleviated by available antipsychotic treatment. LÄS MER

  7. 5. Genetic gating of human fear, fear learning and extinction : psychophysiological, brain imaging (fMRI) and clinical studies

    Författare :Tina B Lonsdorf; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Individuals differ in their reaction to the same environmental stressor. After being opposed to the same trauma, some individuals will develop affective pathologies, while others will not. This is assumed to result, at least partly, from a differential genetic vulnerability. LÄS MER