Attention-deficit/hyperactivity disorder is a common neurobehavioral disorder of childhood and adolescence. The etiology of attention-deficit/hyperactivity disorder is not well understood. Neurochemical studies suggest, alterations in catecholaminergic, mainly dopaminergic and noradrenergic, transmitter functions markedly contribute to the symptoms of this disorder. The symptoms of attention-de...

Research suggests that Attention Deficit Hyperactivity Disorder (ADHD) and nicotine withdrawal symptoms are related; however, it is unknown how this relationship extends across ADHD symptom gradations, differs between inattention and hyperactivity-impulsivity symptom types, and generalizes to a national sample. This study examined cross-sectional associations between childhood ADHD symptom inde...

Previous research suggests a link between Attention Deficit Hyperactivity Disorder (ADHD) and criminal behaviour. The present study explored the relationship ADHD symptoms cyberdeviance. 170 participants completed an online questionnaire measuring computer crime behaviour, symptoms, impulsivity. A statistically significant was found Cyberdeviance, Regression analysis showed that hyperactivity g...

UNLABELLED Intraarterial thrombolytic therapy has been used recently for treatment of acute ischemic stroke within 6 h after onset. Although hypoactivity of 99mTc-hexamethylpropyleneamine oxime (HMPAO) in stroke has been well documented, hyperactivity of HMPAO has not been evaluated in sufficient detail. The purpose of this study was to evaluate the incidence and clinical importance of hyperact...

attention deficit hyperactivity disorder (adhd) and anxiety is the most common childhood psychiatric disorder. based on studies, these disorders are more prevalent in some chronic disease. this study aimed at investigating the prevalence of adhd and anxiety in children with malignancy and anxiety in their parents and comparing the results with those of the control group. one hundred, 3-15-year-...

BACKGROUND Attention-deficit/hyperactivity symptoms have repeatedly been associated with poor cognitive functioning. Genetic studies have demonstrated a shared etiology of attention-deficit/hyperactivity disorder (ADHD) and cognitive ability, suggesting a common underlying neurobiology of ADHD and cognition. Further, neuroimaging studies suggest that altered cortical development is related to A...

Attention deficit hyperactivity disorder (ADHD) is characterized by hyperactivity, inattention, and impulsivity. The coloboma mouse model of ADHD exhibits profound hyperactivity. To determine whether coloboma mice exhibit other signs of ADHD, we assessed latent inhibition as a test of attention, and impulsivity in a delayed reinforcement paradigm. Latent inhibition was present in control mice b...

introduction: this study aimed to evaluate the effectiveness of neurofeedback on attention deficit hyperactivity disorder. methods: this is a quasi-experimental study without a control group. the study population included all children aged 5 to 12 years old affected with attention deficit hyperactivity disorders in tehran, iran who were referred to psychiatric clinics and given the diagnosis. t...