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OBJECTIVE Previous studies regarding Internet addiction have investigated associated psychological variables such as shyness, loneliness, self-consciousness, anxiety, depression and interpersonal relations. Few studies about the relationship between Internet Addiction and impulsivity have been done. This study aimed to assess whether Internet addiction is(More)
Magnetic resonance imaging (MRI) studies showed a link between chronic smoking and structural brain abnormalities. To date, little is known about the long-term effects of smoking on gray matter deficiencies. MRI study was carried for 44 smokers and 44 matched non-smokers to assess gray matter volume differences between the two groups. Decreased gray matter(More)
Adolescents with early-onset schizophrenia (EOS) provide a unique opportunity to examine regional and disease-specific early abnormal brain development in schizophrenia. There is currently a general agreement that clinical symptoms and cognitive dysfunctions of schizophrenia may arise from a failure of adequate communication between different brain regions.(More)
BACKGROUND Heroin abuse is a major public health problem with high morbidity and mortality. Treatment-seeking heroin-dependent subjects frequently report sleep-related problems that contribute to high relapse rates. Few studies have systematically studied the prevalence of sleep disorders among Chinese heroin-dependent subjects. OBJECTIVES This study(More)
BACKGROUND Eating disorders is a particular problem for university students. However, little is known about this problem among medical students who often have high stress. AIMS The aims of this study were to describe the changes in eating attitudes and eating disorders from 2006 to 2008 in a medical student sample, and to compare the gender differences of(More)
BACKGROUND Use of ketamine as a recreational drug is spreading rapidly among young people all over the world. Epidemiological studies have linked chronic ketamine use with a number of problems, including cognitive impairments, bladder dysfunction, and ketamine-related death. However, little is known about the long-term effects of ketamine use on brain(More)
BACKGROUND Cigarette smoking continues to be the leading cause of preventable morbidity and mortality in China and other countries. Previous studies have demonstrated gray matter loss in chronic smokers. However, only a few studies assessed the changes of white matter integrity in this group. Based on those previous reports of alterations in white matter(More)
Few studies have been previously published about the resting state brain activity in young chronic smokers, although many previous fMRI studies have shown that the task-related activity pattern is altered in chronic smokers. In the present study, forty-five healthy smokers (age: 27.9 ± 5.6 year) and forty-four healthy non-smoking control subjects (age: 26.3(More)
Ketamine abuse has been shown to have a deleterious impact on brain function. However, the precise mechanisms of ketamine dependence-induced pathological change remain poorly understood. Although there is evidence for white matter changes in drug abuse, the presence of white matter abnormalities in chronic ketamine users has not been studied. White matter(More)
BACKGROUND Previous neuroimaging studies have documented changes in the brain of heroin addicts. However, few researches have detailed whether such changes can be amended after short-term abstinence. METHODS We used magnetic resonance imaging (MRI) to investigate gray matter volume in 20 heroin-dependent patients at 3 days and at 1 month after heroin(More)