This research investigates how communication between the heart and brain influences cognition and mental health. By studying heart rate variability, vagus nerve activity, and neural oscillations, it reveals a direct effect of heart rhythms on brain function, offering new insights into schizophrenia, mental illness, and body-based therapeutic interventions.

This study examines cognitive reserve theory by investigating the relationship between education and cognitive performance across developed and developing countries. Using numeracy and verbal fluency measures, it finds that higher education consistently improves cognition. However, cognitive performance is largely similar across countries once education level is considered, challenging assumptions about educational quality differences.