Identifying ADHD boys by very-low frequency prefrontal fNIRS fluctuations during a rhythmic mental arithmetic task.

Computer-aided diagnosis of attention-deficit/hyperactivity disorder (ADHD) aims to provide useful adjunctive indicators to support more accurate and cost-effective clinical decisions. Deep- and machine-learning (ML) techniques are increasingly used to identify neuroimaging-based features for objective assessment of ADHD. Despite promising results in diagnostic prediction, substantial barriers still hamper the translation of the research into daily clinic.

Stress estimation by the prefrontal cortex asymmetry: Study on fNIRS signals.

Background: Functional near-infrared spectroscopy (fNIRS) is a non-invasive technique frequently used to measure the brain hemodynamic activity in applications to evaluate affective disorders and stress. Using two wavelengths of light, it is possible to monitor relative changes in the concentrations of oxyhemoglobin and deoxyhemoglobin. Besides, the spatial asymmetry in the prefrontal cortex activity has been correlated with the brain response to stressful situations.

Frequency-domain analysis of fNIRS fluctuations induced by rhythmic mental arithmetic.

Functional near-infrared spectroscopy (fNIRS) is an increasingly used technology for imaging neural correlates of cognitive processes. However, fNIRS signals are commonly impaired by task-evoked and spontaneous hemodynamic oscillations of non-cerebral origin, a major challenge in fNIRS research. In an attempt to isolate the task-evoked cortical response, we investigated the coupling between hemodynamic changes arising from superficial and deep layers during mental effort.

[Subjective memory complaints, perceived stress and coping strategies in young adults].

Introduction: Subjective memory complaints are becoming more and more frequent among young adults. There are currently no studies in the literature that analyse the relation among memory complaints, perceived stress and coping strategies as a whole in young adults.

Aim: To determine the contribution made by perceived stress and different coping strategies on subjective memory complaints in healthy young adults.

[Subjective memory complaints in young adults: the influence of the emotional state].

INTRODUCTION. Many young people today display memory complaints that are not linked to their real cognitive performance. A number of studies have sought to identify the factors involved in this problem, such as anxious-depressive symptoms, the variables of anxiety traditionally being measured as somatic or cognitive manifestations with an activation that is unspecific or not linked to any particular stimulus.