Glossolalia and Aphasia: Related but Different Worlds.

The word glossolalia, also referred to as "speaking in tongues," originates from the Greek "glossa" which means "language" and "Lalia" which means "speak." It simply means to talk language. On a linguistic perspective, glossolalia is characterized by almost no recognizable words or semantic content, apart from biblical words and phrases, with an overrepresentation of a small phonemes number, accelerated speech output, and modification of accents and melody. Its phonemic properties have been said to resemble those of the language(s) of the speaker. It is generally a voluntary intimate communication act associated with religious spiritual thoughts, although it has also been described in mental disorders. Glossolalia state is a special mental state, completely different from aphasia. Aphasia is characterized by some phonological and grammatical rules; however, these are related to neurolinguistics and not to developmental principles. Unlike aphasia, glossolalia is not associated with central nervous system affection. There is, however, a psychiatric type of glossolalia, which, although similar in terms of phenomenology, is probably a different phenomenon. A common thought is that there is a linguistic trend, whose basic component is a stream of speech. This stream is suggested to use early-acquired rules of phonation, adapted according to socially meaningful values and attitudes, in an unconscious way. Therefore, the act of glossolalia is out of the "glossolalists" control. It would appear, therefore, that there is a broad spectrum of anomalous speech, of which religious glossolalia is only one manifestation. The aim of this chapter is to understand the mental state of glossolalia in comparison to aphasia in the light of neurolinguistic and psychiatric features. Moreover, we tried to highlight the underlying brain network. Pilot neuroscientific data suggest that it is associated with a deactivation of the cognitive system and an activation of some parts of the mirror neuron networks.