* Evidence for Cerebellar Contributions to Adaptive Plasticity in Speech Perception.
- Human speech perception rapidly adapts to maintain comprehension under adverse listening conditions. For example, with exposure listeners can adapt to heavily accented speech produced by a non-native speaker. Outside the domain of speech perception, adaptive changes in sensory and motor processing have been attributed to cerebellar functions. The present functional magnetic resonance imaging study investigates whether adaptation in speech perception also involves the cerebellum. Acoustic stimuli were distorted using a vocoding plus spectral-shift manipulation and presented in a word recognition task. Regions in the cerebellum that showed differences before versus after adaptation were identified, and the relationship between activity during adaptation and subsequent behavioral improvements was examined. These analyses implicated the right Crus I region of the cerebellum in adaptive changes in speech perception. A functional correlation analysis with the right Crus I as a seed region probed for cerebral cortical regions with covarying hemodynamic responses during the adaptation period. The results provided evidence of a functional network between the cerebellum and language-related regions in the temporal and parietal lobes of the cerebral cortex. Consistent with known cerebellar contributions to sensorimotor adaptation, cerebro-cerebellar interactions may support supervised learning mechanisms that rely on sensory prediction error signals in speech perception.
=>機能の, 関数の, 機能する, 機能上の, 実用的な, 機能的な
Overview of adj functional
The adj functional has 6 senses (first 2 from tagged texts)
1. (3) functional -- (designed for or capable of a particular function or use; "a style of writing
in which every word is functional"; "functional architecture")
2. (1) functional -- (involving or affecting function rather than physiology; "functional deafness")
3. functional -- (relating to or based on function especially as opposed to structure; "the problem
now is not a constitutional one; it is a functional one"; "delegates elected on a functional rather
than a geographical basis")
4. functional, usable, useable, operable, operational -- (fit or ready for use or service; "the
toaster was still functional even after being dropped"; "the lawnmower is a bit rusty but still
usable"; "an operational aircraft"; "the dishwasher is now in working order")
5. functional -- (designed for or adapted to a function or use; "functional education selects
knowledge that is concrete and usable rather than abstract and theoretical"; "functional
architecture")
6. running, operative, functional, working -- ((of e.g. a machine) performing or capable of
performing; "in running (or working) order"; "a functional set of brakes")
--- WordNet end ---