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Differences of emotional responses to the stimuli between individual with and without high depressive scores

Başlık çevirisi mevcut değil.

  1. Tez No: 715774
  2. Yazar: ÖVGÜ PEKER
  3. Danışmanlar: DR. MARTA ANDREATTA
  4. Tez Türü: Yüksek Lisans
  5. Konular: Sosyoloji, Sociology
  6. Anahtar Kelimeler: Belirtilmemiş.
  7. Yıl: 2020
  8. Dil: İngilizce
  9. Üniversite: Erasmus Unıversıteıt Rotterdam
  10. Enstitü: Yurtdışı Enstitü
  11. Ana Bilim Dalı: Belirtilmemiş.
  12. Bilim Dalı: Belirtilmemiş.
  13. Sayfa Sayısı: Belirtilmemiş.

Özet

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Özet (Çeviri)

Stress has an important role in memory process. As stress is affected by depression and also affects depression, in this study I investigated, how the interaction between stress and depression can affect both valence and fear ratings for geometrical shapes (conditioned stimulus, CS+ and other conditioned stimulus, CS-) as a verbal or explicit level and startle potentiation for CS+ and CS- as a physiological or implicit level. One day after either undergoing the Socially Evaluated Cold Pressure Test (SECPT) in stress group or control group which was not exposed to SECPT, the geometrical shape CS+ was presented with painful electric shock in the acquisition phase and there was successful fear acquisition on ratings but not in startle response. In addition, depression and being exposed to stress did not play a significant role in both verbal and physiological responses. On extinction day, the control group had successful extinction learning on fear ratings and there was impaired extinction learning on startle response due to marginal effect as well as valence ratings. Moreover, while it was found that depressed individuals had more fearful ratings to CS+ as compared to nondepressed people at the end of extinction, depression had no significant effect on valence ratings and startle response. Besides, it was clearly found that spontaneous recovery as a verification of the return of fear was observed for valence ratings and startle response independently from depression and group, whereas fear ratings had also same results but not significant. Moreover, there was impaired extinction learning on fear ratings of depressed people in the stress group. On the last day (test day), participants still remembered that CS+ was more negative than CS- at the beginning and at the end of the test. Likewise, for fear ratings, they remember the difference between CS+ and CS- independently from time and group. On the contrary, it was found that there was equal startle response to CS+ and CS-. Being exposed to stress and depression did not have significant effect on ratings and startle response. There was only marginal but not significant effect showing that depressed people in the stress group rated CS+ more fearful as compared to CS-.

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