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Determining the Effects of Anticipatory Anxiety on Neural and Behavioral Correlates of Threat Generalization
Başlık:
Determining the Effects of Anticipatory Anxiety on Neural and Behavioral Correlates of Threat Generalization
Yazar:
Haddara, Nadia, author.
ISBN:
9780355942095
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (67 pages)
Genel Not:
Source: Masters Abstracts International, Volume: 57-06M(E).
Advisors: Vladimir Miskovic Committee members: Nicholas Gaspelin; Brandon Gibbs.
Özet:
The overgeneralization of conditioned fears to perceptually similar, yet benign, environmental cues has emerged as an important pathogenic marker for multiple anxiety disorders. While overgeneralization has been demonstrated in individuals with clinical anxiety, we know little about how experimentally induced anticipatory anxiety interacts with conditioned threat learning to influence generalization processes in a healthy population. In Experiment 1 & 2, participants completed a perceptual discrimination task post-conditioning, in which they were required to determine if generalization stimuli were the same or different from the CS+/-- faces under both threat-of-electric/auditory shock and safe conditions. In Experiment 3, we used high-density EEG (ssVEP & LPP) to examine the consequences of anticipatory anxiety on cortical processing of the CS and morphed generalization stimuli. Results show increased motivational salience of generalization stimuli during anticipatory anxiety as evidenced in LPP amplitude, but not in ssVEP gradients or perceptual discrimination thresholds.
Notlar:
School code: 0792
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Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(693451.1) | 693451-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
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