Who is Jeffrey Thompson

Electroencephalography (EEG) is the recording of electrical activity along the scalp produced by the firing of neurons within the brain. 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. A secondary clinical use of EEG is in the diagnosis of coma and encephalopathies. 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|Buddha meditating, Borim Temple, Korea

Meditation is a mental discipline by which one attempts to get beyond the reflexive, "thinking" mind into a deeper state of relaxation or awareness. Meditation often involves turning attention to a single point of reference. It is a component of many religions, and has been practiced since antiquity. It is also practiced outside religious traditions. Different meditative disciplines encompass a wide range of spiritual or psychophysical practices that may emphasize different goals—from achievement of a higher state of consciousness, to greater focus, creativity or self-awareness, or simply a more relaxed and peaceful frame of mind.

The word meditation comes from the Indo-European root med-, meaning "to measure."Take Our Word For it Archive of Etymology Questions: MediationAmerican Heritage Dictionary: List of Indo European Roots From the root med- are also derived the English words mete, medicine, modest, and moderate. It entered English as meditation through the Latin meditatio, which originally indicated any type of physical or intellectual exercise, then later evolved into the more specific meaning "contemplation."

Eastern meditation techniques have been adapted and increasingly practiced in Western culture.