The remainder of this book focuses on clinical applications. Parts IV and V discuss the detection of bioelectric and biomagnetic signals, classified on an anatomical basis, as having neural and cardiac tissues as their sources, respectively. Within these parts the discussion is then further divided between bioelectricity and biomagnetism to point out the parallelism between them.
A wide variety of applications for bioelectric measurements are utilized in neurophysiology. These include measurements on both peripheral nerves and on the central nervous system as well as neuromuscular studies. The basic bioelectromagnetic theory underlying them all is, however, the same. For this reason, and because it is not the purpose of this book to serve as a clinical reference, the aforementioned applications are included in but not discussed here systematically.
Theoretically, especially with respect to volume conductors, the measurement principle of electroencephalography (EEG)
is most interesting of the clinical applications of bioelectricity in neurology. Therefore, only this method is discussed in Chapter 13.
Similarly, in Chapter 14, in order to show the relationship between electric and magnetic measurements of the bioelectric activity of the brain, the magnetoencephalogram (MEG)
is cited as an example of biomagnetic measurements in neurology.