Functional Activation and Connectivity of the Left Inferior Frontal Gyrus during Lexical and Phonological Retrieval

Being language a paradigm of structural and functional asymmetry in cognitive processing, the left Inferior Frontal Gyrus has been consistently related to speech production. In fact, it considered key node cortical networks responsible for different components naming. However, isolating these (e.g., lexical, syntactic, phonological retrieval) neuroimaging studies is difficult due use baselines tasks. present study, activation connectivity inferior frontal gyrus was explored using magnetic resonance imaging. Participants performed covert naming task (pressing button based on characteristic). Two conditions were compared: drawings objects single letters (baseline condition). Differences obtained areas Gyrus. The pars triangularis involved retrieval lexical-phonological information, showing pattern with temporal search name perisylvanian letters. Selection information seems involve opercularis both but recruiting supramarginal superior letters, probably orthographic-phonological conversion. results support notion as buffer forwarding neural across