Caffeine is the most widely consumed psychoactive substance in the world. It is readily
available in coffee and other foods and beverages, and is used to mitigate sleepiness …

Coffee is the leading worldwide beverage after water and its trade exceeds US $10 billion
worldwide. Controversies regarding its benefits and risks still exist as reliable evidence is …

The Pittsburgh Sleep Quality Index (PSQI) measures sleep quality and disturbance
retrospectively over a 1-month period using self-reports. Although the PSQI has been used …

Neural populations produce complex oscillatory patterns thought to implement brain
function. The dominant rhythm in the healthy adult human brain is formed by alpha …

Caffeine is the most widely used psychoactive substance and has been considered
occasionally as a drug of abuse. The present paper reviews available data on caffeine …

Objective: Electroencephalographic (EEG) peak alpha frequency (PAF)(measured in Hz)
has been correlated to cognitive performance between healthy and clinical individuals, and …

Sleep disorders have received widespread attention nowadays, which have been promoted
by the accelerated pace of life, unhealthy diets and lack of exercise in modern society. The …

There is a genetic contribution to the idiopathic restless legs syndrome (iRLS). An autosomal
dominant mode of inheritance is suspected, but as yet no gene has been identified. To …

University students report significantly worse sleep quality than the general population.
Sleep problems are related to increased health concerns, irritability, depression, fatigue, and …

Caffeine is the most widely used stimulant in Western countries. Some people voluntarily
reduce caffeine consumption because it impairs the quality of their sleep. Studies in mice …