Publications by authors named "A Sumich"
Article Synopsis
- Self-guided Virtual Reality Exposure Therapy (VRET) has been shown to effectively reduce Public Speaking Anxiety (PSA) and heart rate, indicating lower physiological arousal in socially anxious individuals.
- The study involved 72 participants with high social anxiety who were divided into two groups: one receiving VRET with biofeedback on heart rate and brain activity, and the other receiving VRET alone.
- Results indicated that both groups experienced improvements in social anxiety, but the biofeedback group exhibited a more consistent reduction in physiological arousal and greater decreases in self-reported anxiety levels during sessions.
Distinguishing stable and fluctuating psychopathological features in young individuals at Ultra High Risk (UHR) for psychosis is challenging, but critical for building robust, accurate, early clinical detection and prevention capabilities. Over a 24-month period, 159 UHR individuals were assessed using the Positive and Negative Symptom Scale (PANSS). Generalisability Theory was used to validate the PANSS with this population and to investigate stable and fluctuating features, by estimating the reliability and generalisability of three factor (Positive, Negative, and General) and five factor (Positive, Negative, Cognitive, Depression, and Hostility) symptom models.
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- Understanding brain states in relation to sleep quality and age can help create better sleep hygiene interventions for improved lifestyle choices.! -
- A study with 58 participants used electroencephalography (EEG) to identify non-linear brain features, showing that brain complexity can predict age and sleep quality with varying accuracy.! -
- Results indicated high accuracy (up to 95%) in distinguishing between good and poor sleepers, especially in older adults, while younger adults showed less predictable sleep quality based on brain complexity.!
The original Reinforcement Sensitivity Theory (oRST) proposes two systems of approach (BAS) and avoidance (BIS) motivation to underpin personality and behavior. The revised-RST (rRST) model separates avoidance motivation into passive (BIS; anxiety) and active (FFFS; fear) systems. Prior research has attempted to map RST onto lateralized frontal asymmetry to provide a neurophysiological marker of RST.
View Article and Find Full Text PDFMetacognition refers to the ability to monitor and control one's cognitive processes, which plays an important role in decision-making throughout the lifespan. It is still debated whether metacognitive abilities decline with age. Neuroimaging evidence suggests that metacognition is served by domain-specific mechanisms.
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