Exposure to Blue LED Light at Subjective Daytime Does not Affect Brain Function in Pigmented Mice

Daytime Light Exposure Dynamically Enhances Brain Responses

In humans, light enhances both alertness and performance during nighttime and daytime [1-4] and influences regional brain function [5]. These effects do not correspond to classical visual responses but involve a non-image forming (NIF) system, which elicits greater endocrine, physiological, neurophysiological, and behavioral responses to shorter light wavelengths than to wavelengths geared towa...

Chronic intermittent exposure to ayahuasca during aging does not affect memory in mice

The Quechua term ayahuasca refers to a beverage obtained from decoctions of the liana Banisteriopsis caapi with leaves of Psychotria viridis. The ritualistic use of ayahuasca is becoming a global phenomenon, with some individuals using this beverage throughout life, including in old age. Cognitive impairment is a common manifestation during aging. There are conflicting reports on the ability of...

Exposure to Concentrated Ambient Particles Does Not Affect Vascular Function in Patients with Coronary Heart Disease

BACKGROUND Exposure to fine particulate air pollution is associated with increased cardiovascular morbidity and mortality. We previously demonstrated that exposure to dilute diesel exhaust causes vascular dysfunction in humans. OBJECTIVES We conducted a study to determine whether exposure to ambient particulate matter causes vascular dysfunction. METHODS Twelve male patients with stable cor...

Exposure to 3G mobile phone signals does not affect the biological features of brain tumor cells

BACKGROUND The increase in mobile phone use has generated concerns about possible risks to human health, especially the development of brain tumors. Whether tumor patients should continue to use mobile telephones has remained unclear because of a paucity of information. Herein, we investigated whether electromagnetic fields from mobile phones could alter the biological features of human tumor c...

[Does recurrent exposure to severe hypoglycaemia affect cognitive function?].