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Topic: Basal ganglia



  
 basal ganglia.html
These functional circuits provide a conceptual framework for relating subregions of the basal ganglia to specific aspects of behavior, much as cytoarchitecturally defined cortical areas are defined.
CONCLUSIONS Balanced opposition in the cortically driven activity of striatopallidal and striatonigral pathways is proposed to underlie the complex manner in which the basal ganglia affect behavior.
The basal ganglia provide a major neural system through which the cortex effects behavior.
http://www.unifr.ch/biochem/DREYER/BG.html   (12753 words)

  
 basal
The [basal ganglia's] putamen is mainly connected to the premotor and motor cortex and overactivity [i.e., oversupply of dopamine] in this pathway is thought to account for the physical tics in Tourette's syndrome" (Carter 1998:67).
Less skilled, e.g., than the neocortex's primary motor area, the basal ganglia control basic movements such as the human arm-swing.
In early reptiles, the basal ganglia's archistriatum (i.e., the "most ancient" striatum, or amygdala) and paleostriatum (i.e., the [merely] "ancient" striatum, or globus pallidus) evolved to show identity, power, and submission through programmed movements and postural displays (see ANTIGRAVITY SIGN, CROUCH).
http://members.aol.com/nonverbal2/basal.htm   (649 words)

  
 Basal Ganglia Disorders (Disorders Affecting the Basal Ganglia)
The basal ganglia are groups of structures within the brain that help with movement.
The basal ganglia are also thought to play a role in thinking and emotions.
One of the main jobs of these structures is to help with movement.
http://www.3-rx.com/basal-ganglia-disorders/default.php   (407 words)

  
 Diseases of the Basal Ganglia
The ``theme'' of diseases affecting the basal ganglia appears to be that the balance between the two major pathways is disturbed: the result is either involuntary movements or impairments to motion.
As with brain research generally, much of what is known about the basal ganglia comes from studying diseases which affect them.
As one might expect from their opposing neural behavior, Huntington's disease results in hyperkineticity, the opposite of the hypokineticity of PD.
http://www.hitl.washington.edu/publications/prothero/node52.html   (308 words)

  
 How the Basal Ganglia Make Decisions
The basal ganglia are a collection of subcortical structures whose anatomy and physiology have been characterized in great detail.
Despite a large amount of data regarding their anatomy and physiology, the role of the basal ganglia in both action planning and decision making remains enigmatic.
Postulating that a diffuse neurotransmitter such as dopamine facilitates the change of synaptic strengths, they then demonstrated a plausible mechanism by which extrinsic rewards and penalties could be translated into the learning of specific behaviors.
http://www.forktail.com/Gangela.htm   (4924 words)

  
 Basal ganglia - Wikipedia, the free encyclopedia
The circuitry of the basal ganglia is often divided into two major pathways, the direct pathway and the indirect pathway:
B-The main part of the basal ganglia system is the basal ganglia core.
As said above the basal ganglia system of the primate may be subdivided into subsystems.
http://en.wikipedia.org/wiki/Basal_ganglia   (1811 words)

  
 Basal Ganglia and Cerebellum
The relationships between the nuclei of the basal ganglia are by no means completely understood.
The anatomy of these structures should be a review from the "coronal and horizontal sections" lab.
The balance between these two systems allows for smooth, coordinated movement, and a disturbance in either system will show up as movement disorders.
http://thalamus.wustl.edu/course/cerebell.html   (1725 words)

  
 Basal ganglia
MDVU - Pediatric Movement Disorders - Anatomy and Physiology: Basal Ganglia...
UMMS Mind Brain and Behavior 1: Motor System / Basal Ganglia Suggested Readings...
Healthopedia.com - Basal Ganglia Disorders (Disorders Affecting the Basal Gangli...
http://www.scienceoxygen.com/biology/443.html   (179 words)

  
 Basal ganglia research Publications
Physiological aspects of information processing in the basal ganglia of normal and parkinsonian primates.
Izhar Bar-Gad, Genela Morris and Hagai Bergman, Information processing, dimensionality reduction and reinforcement learning in the basal ganglia; Progress in Neurobiology, 71(6): 439-473, 2003 [PDF]
J A. Goldberg, T. Boraud, S. Maraton, E. Vaadia, and H. Bergman, Enhanced Synchrony In The Primary Motor Cortex Of MPTP Primates May Underlie Muscle Co-Contraction And Rigidity, The Basal Ganglia VII, Advances in behavioral biology, Vol 52, editors: Louise F.B. Nicholson and Richard L.M. Faull, Kluwer Academic/Plenum Publishers, Chapter 11, pp 97-106, 2002
http://basalganglia.huji.ac.il/publications.htm   (2572 words)

  
 The Basal Ganglia
The Basal Ganglia seem to be chiefly involved in motor processes.
Instead, they seem to exert an influence which picks out the correct type of movement.
The Basal Ganglia itself is made up of the the striatum, which is also called the caudate and putamen, and the
http://macalester.edu/psychology/whathap/UBNRP/StemCells/Basalganglia.html   (326 words)

  
 Jarvis Lab -- Vocal Basal Ganglia
We are interested in the role of this pathway and the basal ganglia in learned vocal communication.
Lesions in the anterior pathway lead to changes in song development in juveniles or in adults during new singing seasons.
The anterior vocal pathway, a forebrain-basal ganglia loop, is important for the development and learning of song in birds and shows differential gene expression based on social context.
http://www.jarvislab.net/BasalGanglia.html   (602 words)

  
 About the International Basal Ganglia Society - IBAGS
Again there was ample opportunity for delegates to interact socially and to endlessly discuss the basal ganglia.
The success of this meeting revealed a need that was not conveniently filled by a large audience medical or neuroscience meetings.
It appeared that it would be useful to hold regular meetings on the basal ganglia with triple ambition: quality, multidisciplinarity, and balance between clinical neurology and fundamental sciences.
http://www.ibags.info/introduction.html   (1225 words)

  
 Bob Schuster, Personal Injury Attorney, Medical Malpractice Lawyer, Wrongful Death Lawyer - News
The basal ganglia are extensively linked to the cerebral cortex and are associated with complex cognitive behaviors (including learning, memory, and emotional functions) as well as regulation of limb and eye movements.
The globus pallidus and the putamen are two structures located within the basal ganglia.
There is a separate illustration --- and separate discussion --- of the globus pallidus.
http://www.bobschuster.com/news_basal.html   (147 words)

  
 A Brief History of the Basal Ganglia
It held such a central position, striped with a wide range of cortical and brainstem fibers, that at the time it was believed to be the "sensorium commune" as defined by Aristotle.
The term "basal ganglia" has been generally used to refer to these major anatomical telencephalic subcortical nuclei at the base of the forebrain.
To find out more about the basal ganglia follow the research link above.
http://www.anc.ed.ac.uk/~anaru/research/history   (364 words)

  
 Basal Ganglia Research Group
Our research involves the use of a variety of anatomical and physiological techniques to investigate the function of a group of areas in the brain collectively called the Basal Ganglia.
Dysfunction of the basal ganglia contributes to disorders such as Parkinson's disease, Huntington's disease, attention-deficit hyperactivity disorder (ADHD) and schizophrenia.
Anatomy and Structural Biology > Basal Ganglia Research Group
http://anatomy.otago.ac.nz/basal_ganglia_research   (218 words)

  
 Basal Ganglia Components and Pathways
The inhibitory direct pathway projects monosynaptically from the putamen to the motor regions of the internal globus pallidus and the substantia nigra pars reniculata [84].
There are two major pathways through the basal ganglia, arising from different cellular populations of the putamen.
The external section of the globulus pallidus passes information within the basal ganglia, in particular to the subthalamic nucleus.
http://www.hitl.washington.edu/publications/prothero/node51.html   (517 words)

  
 Basal Ganglia
Published on the Web site in 1998 (last revised May 2004) and aimed at health care professionals, providers and medical students, this peer-reviewed textbook gives detailed information about the role of the basal gangila in the anatomy of movement and motor activity in the human body.
This resource has been archived as it may still be of interest.
A multimedia textbook on functional anatomy of the basal ganglia from the large collection of online medical textbooks, authored by academic experts at the University of Iowa, and made freely available on their Web-based resource, the Virtual Hospital digital health sciences library.
http://omni.ac.uk/browse/mesh/D001479.html   (119 words)

  
 AllRefer Health - Basal Ganglia Dysfunction
You are here : AllRefer.com > Health > Diseases and Conditions > Basal Ganglia Dysfunction
Basal ganglia dysfunction involves dysfunction of the basal ganglia, a brain region involved in motor control and movement.
Numerous brain disorders can cause basal ganglia dysfunction, including Parkinson's disease, Huntington's disease, progressive supranuclear palsy, corticobasal degeneration, multiple system atrophy, Wilson disease, and dystonia.
http://health.allrefer.com/health/basal-ganglia-dysfunction-info.html   (332 words)

  
 Basal ganglia - definition of Basal ganglia in Encyclopedia
The basal ganglia are a group of nuclei in the brain associated with motor coordination.
The basal ganglia are located deep within the brain, under the cortical white matter and consist of: the caudate nucleus, the putamen, nucleus accumbens, globus pallidus, the substantia nigra, and the subthalamic nucleus.
The term "basal ganglia" is a misnomer since the term ganglion is usually used to denote groups of neurons outside the central nervous system, while nucleus is used for those within the CNS.
http://encyclopedia.laborlawtalk.com/Basal_ganglia   (218 words)

  
 Basal Ganglia
Such a loss occurs in the human disorder, Parkinson's disease which involves degeneration of dopaminergic neurons in the mid-brain and their synaptic connections in the sub-cortical region of the basal ganglia known as the caudate/putamen or neostriatum.
Structural Plasticity in Basal Ganglia Nuclei Relevant to Clinical Disorders
Modern neuroanatomical techniques have been applied to this problem and there is evidence that the important cortical input to neostriatum is impaired as a direct result of dopaminergic denervation.
http://www.vet.ed.ac.uk/pvs/ganglia.htm   (388 words)

  
 Basal Ganglia
The basal ganglia are involved with voluntary limb movement, eye movement, and cognition.
We have focused upon how the basal ganglia are involved in motor control, and have thus developed models of basal ganglia in the performance of saccades and arm movements.
Our models are based upon the hypothesis that the basal ganglia inhibit competing motor programs and provide next sensory state information back to cortex; this is particularly important for sequential movements, activities to which the basal ganglia are known to contribute.
http://www-hbp.usc.edu/Projects/basal.htm   (93 words)

  
 Neurology -- Collected Resources : Basal ganglia
Symmetric basal ganglia calcification in a 9-year-old child with MELAS
Genetic heterogeneity in familial idiopathic basal ganglia calcification (Fahr disease)
Sonographic detection of basal ganglia lesions in asymptomatic and symptomatic Wilson disease
http://www.neurology.org/cgi/collection/basal_ganglia   (259 words)

  
 The Basal Ganglia
This region is now recognized as forming part of a functional circiuit distinct from the dorsal parts of the basal ganglia (see Connections).
Formally this nucleus was thought to be part of the septal area it but now appears to be related both to the ventral striatum and pallidum and to limbic structures.
For example, "strionigral" fibers arise from the striatum (caudate + putamen) and terminate in the substantia nigra wereas "nigrostriate" fibers persue the opposite course.
http://www.umanitoba.ca/faculties/medicine/anatomy/csjb.htm   (672 words)

  
 basal ganglia - definition of basal ganglia by the Free Online Dictionary, Thesaurus and Encyclopedia.
caudate, caudate nucleus - a tail-shaped basal ganglion located in a lateral ventricle of the brain
This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.
basal ganglion - any of several masses of subcortical gray matter at the base of each cerebral hemisphere that seem to be involved in the regulation of voluntary movement
http://www.thefreedictionary.com/basal+ganglia   (361 words)

  
 LEFT BASAL GANGLIA LACUNE
Due to the dense concentration of neurons in the basal ganglia, a small lacunar infarct may have a dramatic clinical picture.
The role of a CT scan in the initial phases of an infarct is essentially to rule out the presence of hemorrhage so that the patient can be anticoagulated.
The arrows point to the presence of ovoid areas of well defined low attenuation within the basal ganglia bilaterally.
http://www.netmedicine.com/xray/ctscan/ct40.htm   (254 words)

  
 Basal ganglia
The exact definition has changed with increased understanding of the functioning of the brain.
The basal ganglia is roughly defined as the areas in the brain that, if damaged, would disrupt motor abilities.
All is still licensed under the GNU FDL.
http://www.wordlookup.net/ba/basal-ganglia.html   (266 words)

  
 Basal Ganglia Research Pages
Shown above (in green) is the largest structure in the basal ganglia called the striatum.
Deep below the cerebral cortex there are interconnected areas of grey matter collectively known as the "basal ganglia" (basement structures).
http://www.anc.ed.ac.uk/~anaru/research   (35 words)

  
 basal ganglia
In current usage, the phrase 'basal ganglia' means: the caudate nucleus, putamen and globus pallidus.
They are functionally important, at a minimum, for controlling voluntary movements and establishing postures.
Similarly, the shape of the putamen and globus pallidus resembles a lens, and they are collectively called the lenticular nucleus.
http://www.sci.uidaho.edu/med532/basal.htm   (108 words)

  
 Parkinson's Disease Tutorial
This kind of instructional technology rapid prototyping for medical education at the undergraduate and graduate level is what we emphasize here at San Diego State University College of Sciences Instructional Technologies.
Basal Ganglia Animation Simulating the System Underlying Parkinson's Disease
http://www.sci.sdsu.edu/multimedia/basalgang   (200 words)

  
 Find in a Library: The basal ganglia VII
WorldCat is provided by OCLC Online Computer Library Center, Inc. on behalf of its member libraries.
Find in a Library: The basal ganglia VII
http://worldcatlibraries.org/wcpa/ow/8307a6b19521b00da19afeb4da09e526.html   (60 words)

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