Centre d'Information et de documentation du CRA Rhône-Alpes
CRA
Informations pratiques
-
Adresse
Centre d'information et de documentation
du CRA Rhône-Alpes
Centre Hospitalier le Vinatier
bât 211
95, Bd Pinel
69678 Bron CedexHoraires
Lundi au Vendredi
9h00-12h00 13h30-16h00Contact
Tél: +33(0)4 37 91 54 65
Mail
Fax: +33(0)4 37 91 54 37
-
Résultat de la recherche
4 recherche sur le mot-clé 'basal ganglia'
Affiner la recherche Générer le flux rss de la recherche
Partager le résultat de cette recherche Faire une suggestion
Basal ganglia and autism – a translational perspective / Krishna SUBRAMANIAN in Autism Research, 10-11 (November 2017)
[article]
Titre : Basal ganglia and autism – a translational perspective Type de document : Texte imprimé et/ou numérique Auteurs : Krishna SUBRAMANIAN, Auteur ; Cheryl BRANDENBURG, Auteur ; Fernanda ORSATI, Auteur ; Jean-Jacques SOGHOMONIAN, Auteur ; John P. HUSSMAN, Auteur ; Gene J. BLATT, Auteur Article en page(s) : p.1751-1775 Langues : Anglais (eng) Mots-clés : basal ganglia animal models motor, autism neuroanatomy neuroimaging neuropathology Index. décimale : PER Périodiques Résumé : The basal ganglia are a collection of nuclei below the cortical surface that are involved in both motor and non-motor functions, including higher order cognition, social interactions, speech, and repetitive behaviors. Motor development milestones that are delayed in autism such as gross motor, fine motor and walking can aid in early diagnosis of autism. Neuropathology and neuroimaging findings in autism cases revealed volumetric changes and altered cell density in select basal ganglia nuclei. Interestingly, in autism, both the basal ganglia and the cerebellum are impacted both in their motor and non-motor domains and recently, found to be connected via the pons through a short disynaptic pathway. In typically developing individuals, the basal ganglia plays an important role in: eye movement, movement coordination, sensory modulation and processing, eye-hand coordination, action chaining, and inhibition control. Genetic models have proved to be useful toward understanding cellular and molecular changes at the synaptic level in the basal ganglia that may in part contribute to these autism-related behaviors. In autism, basal ganglia functions in motor skill acquisition and development are altered, thus disrupting the normal flow of feedback to the cortex. Taken together, there is an abundance of emerging evidence that the basal ganglia likely plays critical roles in maintaining an inhibitory balance between cortical and subcortical structures, critical for normal motor actions and cognitive functions. In autism, this inhibitory balance is disturbed thus impacting key pathways that affect normal cortical network activity. Autism Res 2017, 10: 1751–1775. © 2017 International Society for Autism Research, Wiley Periodicals, Inc. Lay Summary Habit learning, action selection and performance are modulated by the basal ganglia, a collection of groups of neurons located below the cerebral cortex in the brain. In autism, there is emerging evidence that parts of the basal ganglia are structurally and functionally altered disrupting normal information flow. The basal ganglia through its interconnected circuits with the cerebral cortex and the cerebellum can potentially impact various motor and cognitive functions in the autism brain. En ligne : http://dx.doi.org/10.1002/aur.1837 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=322
in Autism Research > 10-11 (November 2017) . - p.1751-1775[article] Basal ganglia and autism – a translational perspective [Texte imprimé et/ou numérique] / Krishna SUBRAMANIAN, Auteur ; Cheryl BRANDENBURG, Auteur ; Fernanda ORSATI, Auteur ; Jean-Jacques SOGHOMONIAN, Auteur ; John P. HUSSMAN, Auteur ; Gene J. BLATT, Auteur . - p.1751-1775.
Langues : Anglais (eng)
in Autism Research > 10-11 (November 2017) . - p.1751-1775
Mots-clés : basal ganglia animal models motor, autism neuroanatomy neuroimaging neuropathology Index. décimale : PER Périodiques Résumé : The basal ganglia are a collection of nuclei below the cortical surface that are involved in both motor and non-motor functions, including higher order cognition, social interactions, speech, and repetitive behaviors. Motor development milestones that are delayed in autism such as gross motor, fine motor and walking can aid in early diagnosis of autism. Neuropathology and neuroimaging findings in autism cases revealed volumetric changes and altered cell density in select basal ganglia nuclei. Interestingly, in autism, both the basal ganglia and the cerebellum are impacted both in their motor and non-motor domains and recently, found to be connected via the pons through a short disynaptic pathway. In typically developing individuals, the basal ganglia plays an important role in: eye movement, movement coordination, sensory modulation and processing, eye-hand coordination, action chaining, and inhibition control. Genetic models have proved to be useful toward understanding cellular and molecular changes at the synaptic level in the basal ganglia that may in part contribute to these autism-related behaviors. In autism, basal ganglia functions in motor skill acquisition and development are altered, thus disrupting the normal flow of feedback to the cortex. Taken together, there is an abundance of emerging evidence that the basal ganglia likely plays critical roles in maintaining an inhibitory balance between cortical and subcortical structures, critical for normal motor actions and cognitive functions. In autism, this inhibitory balance is disturbed thus impacting key pathways that affect normal cortical network activity. Autism Res 2017, 10: 1751–1775. © 2017 International Society for Autism Research, Wiley Periodicals, Inc. Lay Summary Habit learning, action selection and performance are modulated by the basal ganglia, a collection of groups of neurons located below the cerebral cortex in the brain. In autism, there is emerging evidence that parts of the basal ganglia are structurally and functionally altered disrupting normal information flow. The basal ganglia through its interconnected circuits with the cerebral cortex and the cerebellum can potentially impact various motor and cognitive functions in the autism brain. En ligne : http://dx.doi.org/10.1002/aur.1837 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=322 Increased putamen and callosal motor subregion in treatment-naïve boys with Tourette syndrome indicates changes in the bihemispheric motor network / Veit ROESSNER in Journal of Child Psychology and Psychiatry, 52-3 (March 2011)
[article]
Titre : Increased putamen and callosal motor subregion in treatment-naïve boys with Tourette syndrome indicates changes in the bihemispheric motor network Type de document : Texte imprimé et/ou numérique Auteurs : Veit ROESSNER, Auteur ; Sebastian OVERLACK, Auteur ; Carsten SCHMIDT-SAMOA, Auteur ; Jürgen BAUDEWIG, Auteur ; Peter DECHENT, Auteur ; Aribert ROTHENBERGER, Auteur ; Gunther HELMS, Auteur Année de publication : 2011 Article en page(s) : p.306-314 Langues : Anglais (eng) Mots-clés : Tic disorders Tourette syndrome corpus callosum basal ganglia magnetic resonance imaging child Index. décimale : PER Périodiques Résumé : Background: Despite an increasing number of studies, findings of structural brain alterations in patients with Tourette syndrome are still inconsistent. Several confounders (comorbid conditions, medication, gender, age, IQ) might explain these discrepancies. In the present study, these confounders were excluded to identify differences in basal ganglia and corpus callosum size that can be ascribed more probably to Tourette syndrome per se.
Methods: High-resolution T1-weighted structural magnetic resonance images of 49 boys with Tourette syndrome were compared with those of 42 healthy boys. The groups were matched for IQ and age (9 to 15 years). Boys with comorbid conditions and previous treatment were excluded. Volumes of gray and white matter, cerebrospinal fluid as well as the size of the basal ganglia, the thalamus, the corpus callosum and its subregions were estimated.
Results: The left and right putamen and subregion 3 of the corpus callosum were larger in boys with Tourette syndrome than in healthy controls. No differences were found in volumes of caudate nucleus, globus pallidus or thalamus of each hemisphere or in total callosal size and its other subregions.
Conclusions: Bilateral enlargement of the putamen may reflect dopaminergic dysfunction or neuroimmunologic alterations (PANDAS) underlying Tourette syndrome. The larger callosal motor subregion 3 might be a consequence of daily tic activity. Previous divergent volumetric findings might be ascribed to confounding variables like comorbid conditions or medication, or to different imaging methods.En ligne : http://dx.doi.org/10.1111/j.1469-7610.2010.02324.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=118
in Journal of Child Psychology and Psychiatry > 52-3 (March 2011) . - p.306-314[article] Increased putamen and callosal motor subregion in treatment-naïve boys with Tourette syndrome indicates changes in the bihemispheric motor network [Texte imprimé et/ou numérique] / Veit ROESSNER, Auteur ; Sebastian OVERLACK, Auteur ; Carsten SCHMIDT-SAMOA, Auteur ; Jürgen BAUDEWIG, Auteur ; Peter DECHENT, Auteur ; Aribert ROTHENBERGER, Auteur ; Gunther HELMS, Auteur . - 2011 . - p.306-314.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 52-3 (March 2011) . - p.306-314
Mots-clés : Tic disorders Tourette syndrome corpus callosum basal ganglia magnetic resonance imaging child Index. décimale : PER Périodiques Résumé : Background: Despite an increasing number of studies, findings of structural brain alterations in patients with Tourette syndrome are still inconsistent. Several confounders (comorbid conditions, medication, gender, age, IQ) might explain these discrepancies. In the present study, these confounders were excluded to identify differences in basal ganglia and corpus callosum size that can be ascribed more probably to Tourette syndrome per se.
Methods: High-resolution T1-weighted structural magnetic resonance images of 49 boys with Tourette syndrome were compared with those of 42 healthy boys. The groups were matched for IQ and age (9 to 15 years). Boys with comorbid conditions and previous treatment were excluded. Volumes of gray and white matter, cerebrospinal fluid as well as the size of the basal ganglia, the thalamus, the corpus callosum and its subregions were estimated.
Results: The left and right putamen and subregion 3 of the corpus callosum were larger in boys with Tourette syndrome than in healthy controls. No differences were found in volumes of caudate nucleus, globus pallidus or thalamus of each hemisphere or in total callosal size and its other subregions.
Conclusions: Bilateral enlargement of the putamen may reflect dopaminergic dysfunction or neuroimmunologic alterations (PANDAS) underlying Tourette syndrome. The larger callosal motor subregion 3 might be a consequence of daily tic activity. Previous divergent volumetric findings might be ascribed to confounding variables like comorbid conditions or medication, or to different imaging methods.En ligne : http://dx.doi.org/10.1111/j.1469-7610.2010.02324.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=118 Probabilistic reinforcement learning in adults with autism spectrum disorders / Marjorie SOLOMON in Autism Research, 4-2 (April 2011)
[article]
Titre : Probabilistic reinforcement learning in adults with autism spectrum disorders Type de document : Texte imprimé et/ou numérique Auteurs : Marjorie SOLOMON, Auteur ; Anne C. SMITH, Auteur ; Michael J. FRANK, Auteur ; Stanford LY, Auteur ; Cameron S. CARTER, Auteur Année de publication : 2011 Article en page(s) : p.109-120 Langues : Anglais (eng) Mots-clés : autism spectrum disorders probabilistic reinforcement learning basal ganglia orbito-frontal cortex computational model Index. décimale : PER Périodiques Résumé : Background: Autism spectrum disorders (ASDs) can be conceptualized as disorders of learning, however there have been few experimental studies taking this perspective. Methods: We examined the probabilistic reinforcement learning performance of 28 adults with ASDs and 30 typically developing adults on a task requiring learning relationships between three stimulus pairs consisting of Japanese characters with feedback that was valid with different probabilities (80%, 70%, and 60%). Both univariate and Bayesian state–space data analytic methods were employed. Hypotheses were based on the extant literature as well as on neurobiological and computational models of reinforcement learning. Results: Both groups learned the task after training. However, there were group differences in early learning in the first task block where individuals with ASDs acquired the most frequently accurately reinforced stimulus pair (80%) comparably to typically developing individuals; exhibited poorer acquisition of the less frequently reinforced 70% pair as assessed by state–space learning curves; and outperformed typically developing individuals on the near chance (60%) pair. Individuals with ASDs also demonstrated deficits in using positive feedback to exploit rewarded choices. Conclusions: Results support the contention that individuals with ASDs are slower learners. Based on neurobiology and on the results of computational modeling, one interpretation of this pattern of findings is that impairments are related to deficits in flexible updating of reinforcement history as mediated by the orbito-frontal cortex, with spared functioning of the basal ganglia. This hypothesis about the pathophysiology of learning in ASDs can be tested using functional magnetic resonance imaging. En ligne : http://dx.doi.org/10.1002/aur.177 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=121
in Autism Research > 4-2 (April 2011) . - p.109-120[article] Probabilistic reinforcement learning in adults with autism spectrum disorders [Texte imprimé et/ou numérique] / Marjorie SOLOMON, Auteur ; Anne C. SMITH, Auteur ; Michael J. FRANK, Auteur ; Stanford LY, Auteur ; Cameron S. CARTER, Auteur . - 2011 . - p.109-120.
Langues : Anglais (eng)
in Autism Research > 4-2 (April 2011) . - p.109-120
Mots-clés : autism spectrum disorders probabilistic reinforcement learning basal ganglia orbito-frontal cortex computational model Index. décimale : PER Périodiques Résumé : Background: Autism spectrum disorders (ASDs) can be conceptualized as disorders of learning, however there have been few experimental studies taking this perspective. Methods: We examined the probabilistic reinforcement learning performance of 28 adults with ASDs and 30 typically developing adults on a task requiring learning relationships between three stimulus pairs consisting of Japanese characters with feedback that was valid with different probabilities (80%, 70%, and 60%). Both univariate and Bayesian state–space data analytic methods were employed. Hypotheses were based on the extant literature as well as on neurobiological and computational models of reinforcement learning. Results: Both groups learned the task after training. However, there were group differences in early learning in the first task block where individuals with ASDs acquired the most frequently accurately reinforced stimulus pair (80%) comparably to typically developing individuals; exhibited poorer acquisition of the less frequently reinforced 70% pair as assessed by state–space learning curves; and outperformed typically developing individuals on the near chance (60%) pair. Individuals with ASDs also demonstrated deficits in using positive feedback to exploit rewarded choices. Conclusions: Results support the contention that individuals with ASDs are slower learners. Based on neurobiology and on the results of computational modeling, one interpretation of this pattern of findings is that impairments are related to deficits in flexible updating of reinforcement history as mediated by the orbito-frontal cortex, with spared functioning of the basal ganglia. This hypothesis about the pathophysiology of learning in ASDs can be tested using functional magnetic resonance imaging. En ligne : http://dx.doi.org/10.1002/aur.177 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=121 Annual Research Review: The neurobehavioral development of multiple memory systems – implications for childhood and adolescent psychiatric disorders / Jarid GOODMAN in Journal of Child Psychology and Psychiatry, 55-6 (June 2014)
[article]
Titre : Annual Research Review: The neurobehavioral development of multiple memory systems – implications for childhood and adolescent psychiatric disorders Type de document : Texte imprimé et/ou numérique Auteurs : Jarid GOODMAN, Auteur ; Rachel MARSH, Auteur ; Bradley S. PETERSON, Auteur ; Mark G. PACKARD, Auteur Année de publication : 2014 Article en page(s) : p.582-610 Langues : Anglais (eng) Mots-clés : Learning memory neuropsychiatry psychopathologies hippocampus striatum basal ganglia anxiety stress Index. décimale : PER Périodiques Résumé : Extensive evidence indicates that mammalian memory is organized into multiple brains systems, including a ‘cognitive’ memory system that depends on the hippocampus and a stimulus-response ‘habit’ memory system that depends on the dorsolateral striatum. Dorsal striatal-dependent habit memory may in part influence the development and expression of some human psychopathologies, particularly those characterized by strong habit-like behavioral features. The present review considers this hypothesis as it pertains to psychopathologies that typically emerge during childhood and adolescence. These disorders include Tourette syndrome, attention-deficit/hyperactivity disorder, obsessive–compulsive disorder, eating disorders, and autism spectrum disorders. Human and nonhuman animal research shows that the typical development of memory systems comprises the early maturation of striatal-dependent habit memory and the relatively late maturation of hippocampal-dependent cognitive memory. We speculate that the differing rates of development of these memory systems may in part contribute to the early emergence of habit-like symptoms in childhood and adolescence. In addition, abnormalities in hippocampal and striatal brain regions have been observed consistently in youth with these disorders, suggesting that the aberrant development of memory systems may also contribute to the emergence of habit-like symptoms as core pathological features of these illnesses. Considering these disorders within the context of multiple memory systems may help elucidate the pathogenesis of habit-like symptoms in childhood and adolescence, and lead to novel treatments that lessen the habit-like behavioral features of these disorders. En ligne : http://dx.doi.org/10.1111/jcpp.12169 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=234
in Journal of Child Psychology and Psychiatry > 55-6 (June 2014) . - p.582-610[article] Annual Research Review: The neurobehavioral development of multiple memory systems – implications for childhood and adolescent psychiatric disorders [Texte imprimé et/ou numérique] / Jarid GOODMAN, Auteur ; Rachel MARSH, Auteur ; Bradley S. PETERSON, Auteur ; Mark G. PACKARD, Auteur . - 2014 . - p.582-610.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 55-6 (June 2014) . - p.582-610
Mots-clés : Learning memory neuropsychiatry psychopathologies hippocampus striatum basal ganglia anxiety stress Index. décimale : PER Périodiques Résumé : Extensive evidence indicates that mammalian memory is organized into multiple brains systems, including a ‘cognitive’ memory system that depends on the hippocampus and a stimulus-response ‘habit’ memory system that depends on the dorsolateral striatum. Dorsal striatal-dependent habit memory may in part influence the development and expression of some human psychopathologies, particularly those characterized by strong habit-like behavioral features. The present review considers this hypothesis as it pertains to psychopathologies that typically emerge during childhood and adolescence. These disorders include Tourette syndrome, attention-deficit/hyperactivity disorder, obsessive–compulsive disorder, eating disorders, and autism spectrum disorders. Human and nonhuman animal research shows that the typical development of memory systems comprises the early maturation of striatal-dependent habit memory and the relatively late maturation of hippocampal-dependent cognitive memory. We speculate that the differing rates of development of these memory systems may in part contribute to the early emergence of habit-like symptoms in childhood and adolescence. In addition, abnormalities in hippocampal and striatal brain regions have been observed consistently in youth with these disorders, suggesting that the aberrant development of memory systems may also contribute to the emergence of habit-like symptoms as core pathological features of these illnesses. Considering these disorders within the context of multiple memory systems may help elucidate the pathogenesis of habit-like symptoms in childhood and adolescence, and lead to novel treatments that lessen the habit-like behavioral features of these disorders. En ligne : http://dx.doi.org/10.1111/jcpp.12169 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=234