Applications of Electronics in Medicine 



47 



FIG. 7. The Marconi encephalograph. (Courtesy of Marconi Instruments, Ltd.) 



rhythms are characteristic of the resting, immature, or isolated 

 parietotemporal cortex. Single rounded waves, alternate with 

 sharp spikes, are found during epileptic seizures, sometimes not 

 perceptible through other symptoms. Williams has dealt with 

 the clinical application of electroencephalography in a recent 

 number of the British Medical Bulletin. 



The cathode-ray tul)e suggests itself as the most convenient 

 form of recording apparatus in electroencephalography, but its 

 use in this field is by no means universal. It is being replaced, 

 for routine work, by the ink-writing recorder. The mirror 

 oscillograph is still used by some workers. 



