Nevertheless, lesion studies, morphological and functional mapping of the cortex evoke a mixed picture concerning the control of perception and production of speech ( Josephs et al., 2006 Hickok et al., 2011 Basilakos et al., 2015 Ardila et al., 2016 Schomers and Pulvermüller, 2016). Overall, our results call for a degree of interdependence based on acoustic information, between the frontal and temporal ends of the language network.Ĭlassical models of language have long proposed a relatively clear subdivision of tasks between the inferior frontal and the superior temporal cortices, ascribing them to production and perception respectively ( Damasio and Geschwind, 1984 Gernsbacher and Kaschak, 2003). Conversely, articulatory features were not associated with brain activity in these regions. Results revealed that phonological information organizes around formant structure during the perception of vowels interestingly, such a model was reconstructed in a broad temporal region, outside of the primary auditory cortex, but also in the pars triangularis of the left inferior frontal gyrus. Here, we tested a model based on acoustic properties (formants), and one based on motor properties (articulation parameters), where model-free decoding of evoked fMRI activity during perception, imagery, and production of vowels had been successful. In this context, the focus of attention has recently shifted toward specific model fitting, aimed at motor and/or acoustic space reconstruction in brain activity within the language network. With modern literature arguing against unique roles for these cortical regions, different theories have favored either neural code-sharing or cortical space-sharing, thus trying to explain the intertwined spatial and functional organization of motor and acoustic components across the fronto-temporal cortical network.
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2Department of Philology, Literature and Linguistics, University of Pisa, Pisa, ItalyĬlassical studies have isolated a distributed network of temporal and frontal areas engaged in the neural representation of speech perception and production.1IMT School for Advanced Studies Lucca, Lucca, Italy.Alessandra Cecilia Rampinini 1*, Giacomo Handjaras 1, Andrea Leo 1, Luca Cecchetti 1, Monica Betta 1, Giovanna Marotta 2, Emiliano Ricciardi 1* and Pietro Pietrini 1