Cardiac autonomic regulation as a proxy of early neurodevelopment: A systematic review.

Background: Cardiac autonomic regulation and early neurodevelopment are linked, but research has focused largely on specific domains, such as attention and memory, neglecting broad neurodevelopmental outcomes. The use of diverse study populations and methodologies further hinders interpretation, highlighting the need for more consistent, integrative research in this area. Therefore, the aim of this study was to clarify how cardiac autonomic regulation (as quantified by heart rate indices) is associated with global neurodevelopment in infancy through a systematic literature review.

Problematic Use of Smartphones and Social Media on Sleep Quality of High School Students in Mexico City.

Background: Smartphones, internet access, and social media represent a new form of problematic behavior and can affect how teens sleep.

Methods: A cross-sectional design was employed to examine the prevalence and association of problematic internet use and problematic smartphone use with sleep quality in a non-probability sample of 190 high school students in Mexico. The internet-related experiences questionnaire (IREQ), the mobile-related experiences questionnaire (MREQ), and the Pittsburgh Sleep Quality Index (PSQI) were used.

The contribution of self-concept to sleep quality in adolescents: A cross-sectional study.

Self-concept has been associated with health-related behaviors and emotional self-regulation, which can improve sleep. However, its involvement in sleep quality in a healthy adolescent population has been little studied. This study evaluated the association between self-concept and sleep quality in adolescents adjusting for sleep/wake habits.

Infants prenatally exposed to SARS-CoV-2 show the absence of fidgety movements and are at higher risk for neurological disorders: A comparative study.

Congenital viral infections are believed to damage the developing neonatal brain. However, whether neonates exposed to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) show manifestations of such damage remains unclear. For neurodevelopment evaluation, general movement assessments have been shown to be effective in identifying early indicators of neurological dysfunction, including the absence of fidgety movements.

Habituation Alteration in Infants with Periventricular Echogenicity as an Indicator of Neurocognitive Impairment.

Habituation difficulties may suggest neurocognitive impairment. Periventricular echogenicity (PVE) potentially causes subtle damage that poses neuropsychological risk. Habituation was evaluated through heart rate and behavioral states in infants at 36-37 weeks of corrected age between control and PVE groups.

Indicators of vulnerability associated with less healthy circadian rhythms in undergraduate medical interns.

To evaluate the association between circadian health parameters and psychological and biological vulnerability, a cross-sectional study was conducted with 15 undergraduate medical interns using the Brief Resilience Scale, the Mini International Neuropsychiatric Interview, and an ambulatory circadian monitoring device. Circadian Health construct was confirmed by factor analysis. Vulnerability factors (history of depression and low resilience) were associated to lower circadian health of motor activity and temperature rhythms.

Fetal growth restriction: From Polyvagal theory to developmental impairments?

Background: The Polyvagal theory argues that behavioral modulation is a fundamental neurodevelopmental process that depends on autonomic regulation.

Objective: The present study aimed to assess sleep architecture in newborns with fetal growth restriction (FGR) using polysomnography as an indicator of Polyvagal theory.

Methods: We studied polysomnography recordings from 68 preterm infants, 34 with FGR and 34 born with appropriate growth for gestational age (AGA), who were matched according to the corrected age for prematurity (CA).

Major depressive disorder in Mexican medical students and associated factors: A focus on current and past abuse experiences.

Background: Major depressive disorder (MDD) is highly prevalent among medical students (MS). Abuse experiences, as well as stress, are among the factors associated with MDD. However, their association with MDD in MS has been scarcely addressed.

[Comparación de síntomas de hiperactividad e inatención en adolescentes con y sin antecedentes de embarazo].

Introduction: Teenage pregnancy has a negative impact both on mother's health and on her offspring quality life and development. In spite of its important social relevance, behavioral factors that can favor its occurrence have not been extensively explored.

Objective: To compare symptoms of inattention and hyperactivity between adolescents with and without a history of pregnancy.

Resilience, sleep quality and morningness as mediators of vulnerability to depression in medical students with sleep pattern alterations.

The medical career is considered highly stressful, especially during internships when academic and clinical demands, combined with changes in sleep patterns, increase students' likelihood to develop depression. Resilience, which is considered as opposite vulnerability to stress and, along with another protective factor, namely morningness, may cause a student to be less reactive to stimuli and, therefore, less prone to depression. The objective of this study was to evaluate the role of resilience and morningness facing to sleep quality and main risk factors, on the development of depression symptoms in a group of students with sleep pattern alterations.

The Interactive Effect of Positive Mental Health and Subjective Sleep Quality on Depressive Symptoms in High School Students.

: The objective of this study was to observe the effect of positive mental health (PMH) and subjective sleep quality (SQ) on depressive symptoms in high school students. : This cross-sectional study evaluated 2,186 students (55% female and 45% male) with a mean age of 16.8 years (± 0.

The association between chronotype and perceived academic stress to depression in medical students.

Depression is a multifactorial illness that is highly prevalent among medical students (MS). Chronotypes, which reflect circadian preference in humans, as well as academic stress have been associated with depression in different populations. However, it is not known how chronotype and stress might alone or in combination, associate with depression in MS.

[Sleep difficulties and psychological symptoms in medicine students in Mexico].

The purpose of this study was to describe sleep difficulties in first year medical students associated with psychopathological symptoms. A cross-sectional study in 572 Medicine students, who were assessed by the Symptom Check List-90 (SCL-90), was performed. A 3.