Poster A3, Tuesday, August 20, 2019, 10:15 am – 12:00 pm, Restaurant Hall
Is the Supramarginal Gyrus a Hub for Both Spoken and Written Word Production?
Venugopal Balasuramanian1, Savannah Sabu1, Julia Terrezza1;1Seton Hall University
The involvement of the supra marginal gyrus (SMG) in speech production is well attested in research (Gunther & Hickok, 2016). Recent research has added new information about the role of SMG and inferior parietal lobe in several different processes and networks (Bikofski et al, 2016). For instance, studies strongly suggest that SMG plays a significant role in spelling/writing (Baldo etal, 2018), along with angular gyrus (AG), SMG underlies Spanish orthographic competence (Gonzalez-Garrido et al, (2017), and visual word processing (Stoeckel etal, 2009). In the present context, the current study aims at answering the question ‘Does the SMG serve as a hub for spoken and written word production? Method: Subject. CBH, is a 59-year-old female chronic aphasic with bilateral inferior parietal lobe lesion. Procedure: CBH was tested on Boston Diagnostic Aphasia Examination (BDAE) and the Psycholinguistic Assessment of Language Performance in Aphasia. Results: CBH’s spelling performance revealed impairments at the levels lexical-semantics, phoneme-grapheme conversion, orthographic output lexicon, and graphemic buffer. The current case report offers support to the assertion that SMG plays a significant role in spelling/writing (Baldo et al, 2018). Other studies support the view that SMG also plays a significant role in phonological short-term memory, visual word processing, phonological planning (Luria, 1970), and grammatical processing (Schonberger et al, 2014). Taken together, these studies and the results from the current study appear to suggest that SMG probably serves as a hub (van den Heuvel & Sporns, 2013) pooling variety of information and serving both spoken and written forms of production.
Themes: Disorders: Acquired, Writing and Spelling
Method: Behavioral