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A Neuromagnetic Study of the Functional Organization of the Sensorimotor Cortex

Movement-related neuromagnetic fields from eight healthy human subjects were investigated in a Bereitschaftspotential paradigm. The three conditions studied were right-sided mouth, index finger and foot movement. The neuromagnetic field patterns corresponding to the motor field and the movement-evoked field I were analysed using a moving dipole model. For both components a somatotopic organization was found: the estimated dipole locations for the mouth were more lateral and those for the foot more medial than the estimated dipole positions for the index finger movement. With regard to possible clinical applications, e.g. non-invasive mapping of the sensorimotor cortex and studies of plasticity of the motor function, the present results suggest that the investigation of movement-evoked field I for the index finger condition is most likely to yield further results.     

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Functional muscular abdominal distension--a case report

The rare clinical picture of the functional muscular distension must be demarcated from organic changes which are connected with an increase of the abdominal volume such as intraabdominal tumours, accumulations of fluid or gatherings of gas or pregnancy. In this symptom a functional disturbance is concerned which appears in patients with vegetative lability or psychic peculiarities and by changes of tension of the musculature surrounding the abdominal space leads to the intermittent or chronic protrusion of the abdomen. By means of an anaesthesia the presence of a functional cause can be made evident: after injection of anaesthetics the protruding abdominal wall is subsiding. The knowledge of the picture of the disease saves long diagnostic ways which contribute to the fact to fix labile patients extremely to the observation of their abdomen and to favour the manifestation of a neurosis. The often unsatisfying therapeutic long-term effect is in contrast to the harmlessness of this symptom.