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Advances and Technical Standards in Neurosurgery by A. J. Strong, R. Dardis (auth.), J. D. Pickard, N. Akalan,

By A. J. Strong, R. Dardis (auth.), J. D. Pickard, N. Akalan, C. Di Rocco, V.V. Dolenc, R. Fahlbusch, J. Lobo Antunes, M. Sindou, N. de Tribolet, C. A. F. Tulleken (eds.)

"... the entire chapters of this quantity of Advances and Technical criteria in Neurosurgery are characterized through the typical vast and whole dialogue of the topic dealth with, by way of the actual research of the ancient historical past and by means of feedback for destiny instructions. Figures, ... tables and really entire reference lists, that can rarely be present in modern medical journals, additional concur to supply the reader with an exhaustive and stimulating review." kid's worried procedure 23/2007

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In the first patient there is a sudden reduction of ECoG amplitude propagating sequentially to the next two adjacent channels and to a lesser extent to the third channel. 3 mm per minute, corresponding closely with velocities characteristic of CSD. In the second trace from this patient, ECoG suppression occurs rapidly, recovering most slowly in the upper channel as in the left panel. Synchronous suppression suggests arrival of a wave from a site equidistant from all electrode pairs and to one side of the array, rather than, as in the first panel, propagating along the length of the electrode array.

Time bars are at 10 minute intervals. (Reproduced with permission from Kohl et al. [139]). (Lower panel ) Time courses of changes in oxidized haemoglobin (upper trace), cytochrome oxidase (middle trace) and deoxyhaemoglobin (lower trace) in a ventilated patient following severe head injury, obtained non-invasively with NIRS (Cheng, Prowse and Strong, unpublished). The traces show stereotyped combinations of increased HbO and decreased Hb, separated by an interval of some 25 minutes, and suggesting increased oxygen availability characteristic of CSD; ECoG was not available to verify CSD (Please see (page 15: Haemodynamic Response and page 31: Direct Detection and Characterization of Depolarisations in Humans, and Their Role in Human Traumatic Brain Injury).

In the second trace from this patient, ECoG suppression occurs rapidly, recovering most slowly in the upper channel as in the left panel. Synchronous suppression suggests arrival of a wave from a site equidistant from all electrode pairs and to one side of the array, rather than, as in the first panel, propagating along the length of the electrode array. 0 per minute. (Strong et al. 2002 [4]: reproduced with permission) the strip from a range of angles between 0 and 90 degrees did not fully account for the frequency of synchronous events that we recorded, and the existence of a second pattern of truly synchronous event (possibly due to a partial seizure elsewhere in the cortex [133]) could not be excluded.

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