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Abstract The factors driving seasonal variation in cardiovascular physiology are poorly understood. Using one year of continuous wearable data from 16,415 U.S. adults (5,884,872 person-days), we characterized seasonal variation in resting heart rate (RHR) and heart rate variability (HRV) and tested behavioral covariates (physical activity, sleep) and individual moderators (age, sex, BMI, habitual physical activity).
Abstract Research in humans and animal models suggests that visual responses in early visual cortical areas may be modulated by top-down influences from distant cortical areas, particularly in the frontal and parietal regions. The right posterior parietal cortex is part of a broad cortical network involved in aspects of visual search and attention, but its role in modulating activity in early visual cortical areas is less well understood.
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