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Direct linkWebb, Emma A.; O'Reilly, Michelle A.; Clayden, Jonathan D.; Seunarine, Kiran K.; Chong, Wui K.; Dale, Naomi; Salt, Alison; Clark, Chris A.; Dattani, Mehul T. – Brain, 2012
The growth hormone-insulin-like growth factor-1 axis plays a role in normal brain growth but little is known of the effect of growth hormone deficiency on brain structure. Children with isolated growth hormone deficiency (peak growth hormone less than 6.7 [micro]g/l) and idiopathic short stature (peak growth hormone greater than 10 [micro]g/l)…
Descriptors: Brain, Biochemistry, Children, Psychomotor Skills
Avanzino, Laura; Martino, Davide; Martino, Isadora; Pelosin, Elisa; Vicario, Carmelo M.; Bove, Marco; Defazio, Gianni; Abbruzzese, Giovanni – Brain, 2013
Patients with writer's cramp present sensory and representational abnormalities relevant to motor control, such as impairment in the temporal discrimination between tactile stimuli and in pure motor imagery tasks, like the mental rotation of corporeal and inanimate objects. However, only limited information is available on the ability of patients…
Descriptors: Patients, Psychomotor Skills, Neurological Impairments, Motor Reactions
Ueno, Masaki; Hayano, Yasufumi; Nakagawa, Hiroshi; Yamashita, Toshihide – Brain, 2012
Brain injury that results in an initial behavioural deficit is frequently followed by spontaneous recovery. The intrinsic mechanism of this functional recovery has never been fully understood. Here, we show that reorganization of the corticospinal tract induced by target-derived brain-derived neurotrophic factor is crucial for spontaneous recovery…
Descriptors: Injuries, Genetics, Brain, Neurological Organization
Hodapp, Maike; Vry, Julia; Mall, Volker; Faist, Michael – Brain, 2009
In healthy children, short latency leg muscle reflexes are profoundly modulated throughout the step cycle in a functionally meaningful way and contribute to the electromyographic (EMG) pattern observed during gait. With maturation of the corticospinal tract, the reflex amplitudes are depressed via supraspinal inhibitory mechanisms. In the soleus…
Descriptors: Physical Activities, Cerebral Palsy, Human Body, Training
Meador, Kimford J.; Baker, Gus A.; Browning, Nancy; Cohen, Morris J.; Clayton-Smith, Jill; Kalayjian, Laura A.; Kanner, Andres; Liporace, Joyce D.; Pennell, Page B.; Privitera, Michael; Loring, David W. – Brain, 2011
We previously reported that foetal valproate exposure impairs intelligence quotient. In this follow-up investigation, we examined dose-related effects of foetal antiepileptic drug exposure on verbal and non-verbal cognitive measures. This investigation is an ongoing prospective observational multi-centre study in the USA and UK, which has enrolled…
Descriptors: Epilepsy, Seizures, Intelligence Quotient, Preschool Children
A Subcortical Oscillatory Network Contributes to Recovery of Hand Dexterity after Spinal Cord Injury
Nishimura, Yukio; Morichika, Yosuke; Isa, Tadashi – Brain, 2009
Recent studies have shown that after partial spinal-cord lesion at the mid-cervical segment, the remaining pathways compensate for restoring finger dexterity; however, how they control hand/arm muscles has remained unclear. To elucidate the changes in dynamic properties of neural circuits connecting the motor cortex and hand/arm muscles, we…
Descriptors: Neurological Impairments, Brain, Human Body, Psychomotor Skills
Thomalla, Gotz; Siebner, Hartwig R.; Jonas, Melanie; Baumer, Tobias; Biermann-Ruben, Katja; Hummel, Friedhelm; Gerloff, Christian; Muller-Vahl, Kirsten; Schnitzler, Alfons; Orth, Michael; Munchau, Alexander – Brain, 2009
Gilles de la Tourette syndrome (GTS) is a neuropsychiatric disorder characterized by multiple motor and vocal tics. Previous structural MRI studies have identified regional abnormalities in grey matter, especially in the basal ganglia. These findings are consistent with the assumption of alterations in cortico-striato-thalamo-cortical circuits and…
Descriptors: Neurological Impairments, Mental Disorders, Brain, Correlation
Rotthier, Annelies; Baets, Jonathan; De Vriendt, Els; Jacobs, An; Auer-Grumbach, Michaela; Levy, Nicolas; Bonello-Palot, Nathalie; Kilic, Sara Sebnem; Weis, Joachim; Nascimento, Andres; Swinkels, Marielle; Kruyt, Moyo C.; Jordanova, Albena; De Jonghe, Peter; Timmerman, Vincent – Brain, 2009
Hereditary sensory and autonomic neuropathies (HSAN) are clinically and genetically heterogeneous disorders characterized by axonal atrophy and degeneration, exclusively or predominantly affecting the sensory and autonomic neurons. So far, disease-associated mutations have been identified in seven genes: two genes for autosomal dominant ("SPTLC1"…
Descriptors: Diseases, Clinical Diagnosis, Genetics, Correlation
Caeyenberghs, K.; Wenderoth, N.; Smits-Engelsman, B. C. M.; Sunaert, S.; Swinnen, S. P. – Brain, 2009
Traumatic brain injury (TBI) is a common form of disability in children. Persistent deficits in motor control have been documented following TBI but there has been less emphasis on changes in functional cerebral activity. In the present study, children with moderate to severe TBI (n = 9) and controls (n = 17) were scanned while performing cyclical…
Descriptors: Control Groups, Neurological Impairments, Injuries, Brain
Fortuna, Filippo; Barboni, Piero; Liguori, Rocco; Valentino, Maria Lucia; Savini, Giacomo; Gellera, Cinzia; Mariotti, Caterina; Rizzo, Giovanni; Tonon, Caterina; Manners, David; Lodi, Raffaele; Sadun, Alfredo A.; Carelli, Valerio – Brain, 2009
Optic neuropathy is common in mitochondrial disorders, but poorly characterized in Friedreich's ataxia (FRDA), a recessive condition caused by lack of the mitochondrial protein frataxin. We investigated 26 molecularly confirmed FRDA patients by studying both anterior and posterior sections of the visual pathway using a new, integrated approach.…
Descriptors: Visual Impairments, Diseases, Field Tests, Optics
Voon, Valerie; Brezing, Christina; Gallea, Cecile; Ameli, Rezvan; Roelofs, Karin; LaFrance, W. Curt, Jr.; Hallett, Mark – Brain, 2010
Conversion disorder is characterized by neurological signs and symptoms related to an underlying psychological issue. Amygdala activity to affective stimuli is well characterized in healthy volunteers with greater amygdala activity to both negative and positive stimuli relative to neutral stimuli, and greater activity to negative relative to…
Descriptors: Patients, Brain Hemisphere Functions, Symptoms (Individual Disorders), Diagnostic Tests
Choi, Julia T.; Vining, Eileen P. G.; Reisman, Darcy S.; Bastian, Amy J. – Brain, 2009
Walking flexibility depends on use of feedback or reactive control to respond to unexpected changes in the environment, and the ability to adapt feedforward or predictive control for sustained alterations. Recent work has demonstrated that cerebellar damage impairs feedforward adaptation, but not feedback control, during human split-belt treadmill…
Descriptors: Feedback (Response), Physical Activities, Brain Hemisphere Functions, Surgery
Mostofsky, Stewart H.; Powell, Stephanie K.; Simmonds, Daniel J.; Goldberg, Melissa C.; Caffo, Brian; Pekar, James J. – Brain, 2009
Although motor deficits are common in autism, the neural correlates underlying the disruption of even basic motor execution are unknown. Motor deficits may be some of the earliest identifiable signs of abnormal development and increased understanding of their neural underpinnings may provide insight into autism-associated differences in parallel…
Descriptors: Autism, Motor Development, Task Analysis, Brain Hemisphere Functions
Roze, E.; Soumare, A.; Pironneau, I.; Sangla, S.; de Cock, V. Cochen; Teixeira, A.; Astorquiza, A.; Bonnet, C.; Bleton, J. P.; Vidailhet, M.; Elbaz, A. – Brain, 2009
Task-specific focal dystonias are thought to be due to a combination of individual vulnerability and environmental factors. There are no case-control studies of risk factors for writer's cramp. We undertook a case-control study of 104 consecutive patients and matched controls to identify risk factors for the condition. We collected detailed data…
Descriptors: Suicide, Risk, Patients, Case Studies
Dierick, Ines; Baets, Jonathan; Irobi, Joy; Jacobs, An; De Vriendt, Els; Deconinck, Tine; Merlini, Luciano; Van den Bergh, Peter; Rasic, Vedrana Milic; Robberecht, Wim; Fischer, Dirk; Morales, Raul Juntas; Mitrovic, Zoran; Seeman, Pavel; Mazanec, Radim; Kochanski, Andrzej; Jordanova, Albena; Auer-Grumbach, Michaela; Helderman-van den Enden, A. T. J. M.; Wokke, John H. J.; Nelis, Eva; De Jonghe, Peter; Timmerman, Vincent – Brain, 2008
Distal hereditary motor neuropathy (HMN) is a clinically and genetically heterogeneous group of disorders affecting spinal alpha-motor neurons. Since 2001, mutations in six different genes have been identified for autosomal dominant distal HMN; "glycyl-tRNA synthetase (GARS)," "dynactin 1 (DCTN1)," "small heat shock 27 kDa…
Descriptors: Diseases, Patients, Genetics, Psychomotor Skills
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