Discovering EEG resting state alterations of Semantic Dementia

Semantic dementia (SD) is a variant of the Frontotemporal Lobar Degeneration (FTLD), a spectrum of non-Alzheimer’s dementias (Neary et al., 1998). It is characterized by a progressive language disorder with fluent, empty spontaneous speech, and loss of word meaning, commonly manifested by impaired naming and semantic paraphrases. Following this, SD has also been referred to as the semantic variant of primary progressive aphasia (Gorno-Tempini et al., 2011). According to the diagnostic guidelines of this clinical syndrome, it also encompasses a variety of symptoms such as loss of sympathy and empathy, and narrowed preoccupations (Snowden et al., 2001; Rankin et al., 2005).

Source: Clinical Neurophysiology - February 15, 2016 Category: Neuroscience Authors: Matthias Grieder, Thomas Koenig, Toshihiko Kinoshita, Keita Utsunomiya, Lars-Olof Wahlund, Thomas Dierks, Keiichiro Nishida Source Type: research