The goal of this study was to investigate some of the visuo-motor factors underlying an infant's developing ability to grasp a laterally-moving object. In particular, hand preference, midline crossing, and visual-field asymmetry were investigated by comparing performance as a function of the object's direction of motion. We presented 6-, 8-, and 10-month-old infants with a graspable object, mov...

The vocal control system of oscine songbirds has some perplexing properties--e.g. laterality, adult neurogenesis, neuronal replacement--that are not predicted by common views of how vocal learning takes place. Similarly, we do not understand the relation between the direct pathway for the control of learned song and the recursive pathway necessary for song learning. Some of the paradoxes of the...

Lateralization of brain function was established on the basis of clinical-pathological correlations over a century ago. In the past two decades, this line of research has attempted to link the complex behaviors evident in schizophrenia to the failure to develop and maintain a normal pattern of hemispheric activity. This issue of Schizophrenia Bulletin reviews and presents data from multiple per...

how to cite this article: mirouliaie m, fallah r, partovee m, ordooei m. efficacy of levothyroxine in migraine headaches in children with subclinical hypothyroidism. iran j child neurol autumn 2012;6(4):23-26.   abstract objective hypothyroidism may be an exacerbating factor for  primary headaches and migraine is one of the most common primary headaches in childhood. thepurpose of this study wa...

results our study comprised 739 subjects (367 athletes and 372 non-athletes). among athletic university students, 152 (41.2%) participants complained of headache. such a complaint was present in 217 (58.3%) non-athletic university students. this lower prevalence of headache in athletes was statistically significant (p value < 0.001). among ten different sports fields, the prevalence of headache...

Laterality of inner organs is a wide-spread characteristic of vertebrates and beyond. It is ultimately controlled by the left-asymmetric activation of the Nodal signaling cascade in the lateral plate mesoderm of the neurula stage embryo, which results from a cilia-driven leftward flow of extracellular fluids at the left-right organizer. This scenario is widely accepted for laterality determinat...

OBJECTIVE To evaluate the reliability of temporal and frontal functional MRI (fMRI) activation for the assessment of language dominance, as compared with the Wada test. PATIENTS AND METHODS Ten patients with temporal lobe epilepsy were studied using blood oxygen level dependent fMRI and echoplanar imaging (1.5-T). Three tasks were used: semantic verbal fluency, covert sentence repetition, and...

Twins have always attracted attentionÐ Romulus and Remus, Castor and Pollux, Jacob and Esau, Fafner and Fasold; there has always been intrigue, mystery and confusion surrounding two-in-one and one-in-two. The interest for Laterality and lateralisation is compounded, because if it is the difference between an individual’ s two sides that results in laterality, how are those two sides represented...

Background: Migraine is the most common type of headache in the world and is one of the most important causes of patients to come to the neurologist office. The aim of this study was to determine the prevalence of migraine in high school students. Materials and methods: This is a descriptive study which was done on 2213 high school student, that accidentally chosen from couple of times a m...

Historically, most theoretical accounts of hemispheric specialisation have proposed a single underlying factor that leads to left hemisphere language and right hemisphere visuospatial processing in the majority of people. More recently empirical evidence has started to challenge this view, suggesting lateralisation of language and visuospatial attention are independent. However, so far studies ...