Functional anatomy of speech perception and speech production: Psycholinguistic implications

This paper presents evidence for a new model of the junctional anatomy of s peech/language (Hickok & Poeppel, 2000) which has, tit its core. three cent ral claims: (1) Neural systems supporting the perception of sublexical aspe cts of speech are essentially bilaterally organized in posterior superior t emporal lobe regions; (2) neural systems supporting the production of phone mic aspects of speech comprise a network of predominately left hemisphere s ystems which includes not only frontal regions, but also superior temporal lobe regions: and (3) the neural systems supporting speech perception and p roduction partially overlap in left superior temporal lobe. This model, whi ch postulates nonidentical but partially overlapping systems involved in th e perception and production of speech, explains why psycho- and neurolingui stic evidence is mixed regarding the question of whether input and output p honological systems involve a common network or distinct networks.