Advances in Stereotactic and Functional Neurosurgery 11: by C. H. A. Meyer, A. Detta, C. Kudoh (auth.), Assoc. Professor

By C. H. A. Meyer, A. Detta, C. Kudoh (auth.), Assoc. Professor Dr. Björn A. Meyerson, Professor Dr. Christoph Ostertag (eds.)

This quantity includes chosen contributions from the XIth assembly of the ecu Society for Stereotactic and useful Neurosurgery held in September 1994 in Antalyaffurkey. lots of the papers take care of the numerous healing and technical developments made during this box of neurosurgery. The emergence of recent stereotactic methodologies corresponding to frameless stereotaxy and other kinds of neuronavigation became an vital device for all sorts of neurosurgical operations. increasingly more younger neurosurgeons takes an curiosity within the neurosurgical methods to the remedy of circulation problems, continual ache and epilepsy. this can be a transparent signal ofthe transforming into wisdom of the lengthy missed indisputable fact that those neurosurgical remedies should be provided to massive sufferer populations. Neurotransplantation as a unique therapy of Parkinson's illness has lead the way for the applying of this know-how for different symptoms. The pioneering paintings played via the past due Edward Hitchcock is reviewed right here. there's a renewed curiosity in pallidotomy for facing definite varieties of Parkinson's disorder and likely facets of this operation are mentioned in one other paper. growth within the neurosurgical remedy of soreness is handled by way of contributions on subtle options of percutaneous cordotomy, DREZ operations and important reviews of spinal twine stimulation. a singular process is a record at the reviews of treating melanoma soreness by means of intraspinal implantation of chromaffin cells. a number of contributions conceal the real problems with novel innovations for the examine of neural disorder, peroperative tracking with puppy, microrecording, magneto-encephalography and different techniques.

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A computer-assisted system is also introduced. This system enables to transposed data between images obtained from different imaging modalities, MRI, CT, DSA and X-rays, on one workstation. It computes the parameters of the stereotaxic instrument settings reproducing the path of a surgical probe to the centre of a lesion and allows direct visualisation of the points at which a simulated probe trajectory intersects the image slices. Materials and Methods 1) Neurosurgical Room and X-Ray Picture Acquisition In the operative room, we use a neurosurgical stereotaxic frame based on the Talairach method [14] allowing biplane serial angiography without distortion and with a constant enlargement factor.

As studied by microelectrode recordings, VIM neurons produce large amplitude potentials and have a high spontaneous activity. VIM neurons respond primarily to passive (and voluntary) movements. In addition, these neurons respond to tapping and squeezing of the muscles or tendons. VIM neuronal responses may be phasic or tonic. This nucleus is arranged somatotopically with neurons subserving intraoral structures positioned medially and the upper limb and lower limb progressively more laterally. A characteristic of VIM is the presence of neurons that fire in bursts that are synchronous with peripheral tremor (Fig.

Seven patients have been neurophysiologically evaluated by the use of a Cibex apparatus measuring torque and movement velocity ofthe lower limbs simultaneously with static and dynamic recordings of the EMG. Keywords: Spasticity; intrathecal baclofen. Introduction Spasticity is a clinical sign often present in association with decreased muscle strength. It is characterized by a marked increase in muscle tone both of agonist and antagonist muscles typically giving progressive resistance to a fast passive movement of the limb.

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