Who is Jeffrey Thompson

Electroencephalography (EEG) is the recording of electrical activity along the scalp produced by the firing of neurons within the brain.E. Niedermeyer, Lopes da Silva, F., Electroencephalography, 4th Ed., 1999, Williams & Wilkins, Baltimore, MD, 1258 pp. In clinical contexts, EEG refers to the recording of the brain's spontaneous electrical activity over a short period of time, usually 20?40 minutes, as recorded from multiple electrodes placed on the scalp. In neurology, the main diagnostic application of EEG is in the case of epilepsy, as epileptic activity can create clear abnormalities on a standard EEG study.Atlas of EEG & Seizure Semiology. B. Abou-Khalil; Musilus, K.E.; Elsevier, 2006. A secondary clinical use of EEG is in the diagnosis of coma, encephalopathies, and brain death. EEG used to be a first-line method for the diagnosis of tumors, stroke and other focal brain disorders, but this use has decreased with the advent of anatomical imaging techniques such as MRI and CT.

Derivatives of the EEG technique include evoked potentials (EP), which involves averaging the EEG activity time-locked to the presentation of a stimulus of some sort (visual, somatosensory, or auditory). Event-related potentials refer to averaged EEG responses that are time-locked to more complex processing of stimuli; this technique is used in cognitive science, cognitive psychology, and psychophysiological research.

Category: Image - :Spike-waves.png|thumb|450px|Epileptic spike and wave discharges monitored with EEG.

Category: File - :Endurodoug.jpg|thumb|250px|A statue of Buddha meditating, Borim Temple, Korea

Meditation is used as a broad term for practices done by a sole practitioner without much, if any, external aid, often for the purpose of self-transformation. Often, though not at all necessarily, meditation is done as part of a religious tradition.