Development and validation of a machine learning-based vocal predictive model for major depressive disorder.

Background: Variations in speech intonation are known to be associated with changes in mental state over time. Behavioral vocal analysis is an algorithmic method of determining individuals' behavioral and emotional characteristics from their vocal patterns. It can provide biomarkers for use in psychiatric assessment and monitoring, especially when remote assessment is needed, such as in the COVID-19 pandemic.

The acute effect of Hypericum perforatum on short-term memory in healthy adults.

Rationale: Over-the-counter drugs containing Hypericum perforatum (H. perforatum) have been argued to improve memory and sustained attention. So far, these claims have not been supported in human studies.