A fully integrated low-IF receiver for 1.8GHz in 0.13-μm CMOS is presented. The receiver consists of a VCO, an IQ-divider, an LNA, and a double balanced IQ-mixer. The RF input stage and the commutating stage of the IQ-mixer are current coupled via an on-chip transformer which is operating in resonant mode and is performing a current gain. A design method is presented to reduce the input impedan...

OBJECTIVE To examine auditory cognitive evoked potentials (P300 potentials) and neuropsychological dysfunction in patients with Duchenne muscular dystrophy (DMD). METHOD P300 potentials and neuropsychological test results were obtained from 16 healthy control boys and 20 DMD patients. Full Intelligence Quotients (IQ) were estimated for patients and control group. Mean age was 9.5 years in the...

Clinicians are often asked to determine if significant memory loss has occurred. Clinical judgment figures prominently in making these determinations, because there is no accepted, objective method for estimating premorbid memory. Two studies were designed to explore the utility of an implicit memory task, Anagrams Solutions, for estimating premorbid memory ability. A secondary goal was to iden...

Schellenberg (2004) investigated whether music lessons improved IQ scores in young children in a pretest-posttest design. Six-year-old children were assigned to one of four treatment groups: keyboard instruction, Kodaly vocal instruction, drama instruction, or no-lessons for 36 weeks during the school year. All groups showed a significant increase in IQ scores over the year. A small, significan...

We examine whether children with early unilateral brain injury show an IQ decline over the course of development. Fifteen brain injured children were administered an IQ test once before age 7 and again several years later. Post-7 IQ scores were significantly lower than pre-7 IQ scores. In addition, pre-7 IQ scores were lower for children with larger lesions, but children with smaller lesions an...

OBJECTIVES To demonstrate that high IQ adults diagnosed with ADHD suffer from executive function (EF) impairments that: a) can be identified with a combination of standardized measures and self-report data; and b) occur more commonly in this group than in the general population. METHOD 157 ADHD adults with IQ >/= 120 were assessed with 8 normed measures of EF- 3 index scores from standardized...

Neuroimaging evidences have shown the association of intelligence with several structural brain properties in normal individuals. However, this association for attention deficit hyperactivity disorder (ADHD) is need to be investigated. we estimated grey matter density of the brain using MRI scanning on 56 ADHD individuals comprising 30 combined (age=10.44±2.41, IQ=112.13±13.15, male, 24 right h...

Introduction: It has been shown that intelligence as a general mental ability is related to the structure and function of the brain regions. However, the specificity of these regional dependencies to the intelligence scores in the typical and atypical developed individuals needs to be well understood. In this study, we hypothesized that neural correlates of IQ should not have a fixed pattern ra...

The association between chronic severe malnutrition and poor mental development as a social and health problem that may lead to a behavioral dysfunction has been reported in several studies. This study has attempted to investigate the relation between stunted children and cognitive measures (IQ). In this study, 1945 school children (845 urban, 1100 rural) have randomly selected by using variabl...