Artículo
Expectation and attention in hierarchical auditory prediction
Chennu, Srivas; Noreika, Valdas; Gueorguiev, David; Blenkmann, Alejandro Omar
; Kochen, Sara Silvia
; Ibanez Barassi, Agustin Mariano
; Owen, Adrian M.; Bekinschtein, Tristán Andrés




Fecha de publicación:
07/2013
Editorial:
Society for Neuroscience
Revista:
Journal of Neuroscience
ISSN:
0270-6474
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Resumen
Hierarchical predictive coding suggests that attention in humans emerges from increased precision in probabilistic inference, whereas expectation biases attention in favor of contextually anticipated stimuli. We test these notions within auditory perception by independently manipulating top-down expectation and attentional precision alongside bottom-up stimulus predictability. Our findings support an integrative interpretation of commonly observed electrophysiological signatures of neurodynamics, namely mismatch negativity (MMN), P300, and contingent negative variation (CNV), as manifestations along successive levels of predictive complexity. Early first-level processing indexed by the MMN was sensitive to stimulus predictability: here, attentional precision enhanced early responses, but explicit top-down expectation diminished it. This pattern was in contrast to later, second-level processing indexed by the P300: although sensitive to the degree of predictability, responses at this level were contingent on attentional engagement and in fact sharpened by top-down expectation. At the highest level, the drift of the CNV was a fine-grained marker of top-down expectation itself. Source reconstruction of high-density EEG, supported by intracranial recordings, implicated temporal and frontal regions differentially active at early and late levels. The cortical generators of the CNV suggested that it might be involved in facilitating the consolidation of context-salient stimuli into conscious perception. These results provide convergent empirical support to promising recent accounts of attention and expectation in predictive coding.
Archivos asociados
http://www.jneurosci.org/content/33/27/11194.long
http://dx.doi.org/10.1523/JNEUROSCI.0114-13.2013
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3718380/
http://dx.doi.org/10.1523/JNEUROSCI.0114-13.2013
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3718380/

Citación:
Chennu, Srivas; Noreika, Valdas; Gueorguiev, David; Blenkmann, Alejandro Omar; Kochen, Sara Silvia; et al.; Expectation and attention in hierarchical auditory prediction; Society for Neuroscience; Journal of Neuroscience; 33; 27; 7-2013; 11194-11205
Comunidades y colecciones
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Articulos(IBCN) [246]
Articulos de INST.DE BIOLO.CEL.Y NEURCS."PROF.E.DE ROBERTIS" -
Articulos(SEDE CENTRAL) [15516]
Articulos de SEDE CENTRAL