Title : Reorganization in Processing of Spectral and Temporal Input in the Rat Posterior
نویسندگان
چکیده
41 Environmental enrichment induces powerful changes in the adult cerebral cortex. 42 Studies in primary sensory cortex have observed that environmental enrichment 43 modulates neuronal response strength, selectivity, speed of response and 44 synchronization to rapid sensory input. Other reports suggest that non-primary sensory 45 fields are more plastic than primary sensory cortex. The consequences of environmental 46 enrichment on information processing in non-primary sensory cortex have yet to be 47 studied. Here we examine physiological effects of enrichment in the posterior auditory 48 field (PAF), a field distinguished from primary auditory cortex (A1) by wider receptive 49 fields, slower response times, and a greater preference for slowly modulated sounds. 50 Environmental enrichment induced a significant increase in spectral and temporal 51 selectivity in PAF. PAF neurons exhibited narrower receptive fields and responded 52 significantly faster and for a briefer period to sounds after enrichment. Enrichment 53 increased time-locking to rapidly successive sensory input in PAF neurons. Compared to 54 previous enrichment studies in A1, we observe a greater magnitude of reorganization in 55 PAF after environmental enrichment. Along with other reports observing greater 56 reorganization in non-primary sensory cortex, our results in PAF suggest that non57 primary fields might have a greater capacity for reorganization compared to primary 58
منابع مشابه
Neurophysiol Vikram Jakkamsetti , Kevin Q . Chang and Michael P . Kilgard environmental enrichment input in the rat posterior auditory field induced by Reorganization in processing of spectral and temporal
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Reorganization in processing of spectral and temporal input in the rat posterior auditory field induced by environmental enrichment.
Environmental enrichment induces powerful changes in the adult cerebral cortex. Studies in primary sensory cortex have observed that environmental enrichment modulates neuronal response strength, selectivity, speed of response, and synchronization to rapid sensory input. Other reports suggest that nonprimary sensory fields are more plastic than primary sensory cortex. The consequences of enviro...
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