New Paper out: Com­pre­hen­sive map of a language’s vow­el space

We are glad to announce that our paper (Math­i­as Scharinger, Saman­tha Poe, & William Idsardi) on cor­ti­cal rep­re­sen­ta­tions of Turk­ish vow­els is in press in Jour­nal of Cog­ni­tive Neu­ro­science. In this paper, we extend pre­vi­ous meth­ods of obtain­ing cen­ters of cor­ti­cal activ­i­ty evoked by vow­el exem­plars (e.g. Oble­ser et al., 2003, on Ger­man) and provide an N1m ECD (Equiv­a­lent Cur­rent Dipole) map of the entire vow­el space of Turk­ish. Intrigu­ing­ly, ECD loca­tions mapped near­ly per­fect to loca­tions in F2/F1 space, although our mod­el com­par­ison sug­gest­ed that inclu­sion of dis­crete fea­ture based pre­dic­tors for both loca­tions as well as col­lo­ca­tions of vow­els in audi­to­ry cor­tex improves the mod­el fits sub­stan­tial­ly. We dis­cuss the find­ings on the back­ground of neu­ral cod­ing schemes for speech-related audi­to­ry cat­e­gories.

Fig­ure 1: Loca­tions of Turk­ish vow­el stim­uli in acoustic space (F1,F2, top pan­el) and N1m ECD loca­tions in cor­ti­cal space (lateral-medial/anterior-posterior/inferior-superior, bot­tom pan­el).

UPDATE: Paper is avail­able here.

Ref­er­ences

  • Scharinger M, Idsardi WJ, Poe S. A com­pre­hen­sive three-dimensional cor­ti­cal map of vow­el space. J Cogn Neu­rosci. 2011 Dec;23(12):3972–82. PMID: 21568638. [Open with Read]

15. April 2011 by Dr. Mathias Scharinger
Categories: Auditory Cortex, EEG / MEG, Evoked Activity, Papers, Place of Articulation Features, Publications | Tags: , , , , , | Comments Off on New Paper out: Com­pre­hen­sive map of a language’s vow­el space