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Sökning: WFRF:(Hirschberg A. L.)

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  • Strandqvist, A, et al. (författare)
  • Letter to the editor: Sex and the eye test
  • 2018
  • Ingår i: Psychoneuroendocrinology. - : Elsevier BV. - 1873-3360 .- 0306-4530. ; 98, s. 242-243
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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  • Avdic, H. B., et al. (författare)
  • Reduced effects of social feedback on learning in Turner syndrome
  • 2023
  • Ingår i: Scientific Reports. - : Springer Nature. - 2045-2322. ; 13:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Turner syndrome is a genetic condition caused by a complete or partial loss of one of the X chromosomes. Previous studies indicate that Turner syndrome is associated with challenges in social skills, but the underlying mechanisms remain largely unexplored. A possible mechanism is a reduced social influence on learning. The current study examined the impact of social and non-social feedback on learning in women with Turner syndrome (n=35) and a sex- and age-matched control group (n=37). Participants were instructed to earn points by repeatedly choosing between two stimuli with unequal probabilities of resulting in a reward. Mastering the task therefore required participants to learn through feedback which of the two stimuli was more likely to be rewarded. Data were analyzed using computational modeling and analyses of choice behavior. Social feedback led to a more explorative choice behavior in the control group, resulting in reduced learning compared to non-social feedback. No effects of social feedback on learning were found in Turner syndrome. The current study thus indicates that women with Turner syndrome may be less sensitive to social influences on reinforcement learning, than the general population.
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  • Kocoska-Maras, L., et al. (författare)
  • Cognitive function in association with sex hormones in postmenopausal women
  • 2013
  • Ingår i: Gynecological Endocrinology. - : Informa UK Limited. - 0951-3590 .- 1473-0766. ; 29:1, s. 59-62
  • Tidskriftsartikel (refereegranskat)abstract
    • Several studies have suggested gender differences in cognitive function, but data on the association between sex hormones and cognitive function are contradictory. The aim of our randomized double-blind study was to explore the possible relations between cognitive function and serum levels of sex hormones, oxytocin and insulin-like growth factor-I (IGF-I) in postmenopausal women. Two-hundred healthy postmenopausal women were randomly assigned to receive estrogen, testosterone or placebo treatment for 1 month. The associations of spatial ability, verbal fluency and verbal memory with serum levels of estradiol, testosterone, estradiol/testosterone ratio, androstanediol, oxytocin and IGF-I were analyzed. Spatial ability showed a negative correlation with serum estradiol, estradiol/testosterone ratio, oxytocin levels and a positive association with androstanediol levels. Verbal fluency displayed a negative relationship with serum levels of testosterone, IGF-I and a positive with estradiol/testosterone ratio. Verbal memory displayed a positive correlation to androstanediol. Data suggest that not only absolute levels of sex hormones but also the balance between estrogen and testosterone and their metabolites may be important for cognitive function in women.
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