Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Oscillatory activity in prefrontal and posterior regions during implicit letter-location binding.
Year:2010
Research Areas
  • Health
Information
Abstract
Many cognitive abilities involve the integration of information from different modalities, a process referred to as ¿binding.¿ It remains less clear, however, whether the creation of bound representations occurs in an involuntary manner, and whether the links between the constituent features of an object are symmetrical. We used magnetoencephalography to investigate whether oscillatory brain activity related to binding processes would be observed in conditions in which participants maintain one feature only (involuntary binding); and whether this activity varies as a function of the feature attended to by participants (binding asymmetry). Participants performed two probe recognition tasks that were identical in terms of their perceptual characteristics and only differed with respect to the instructions given (to memorize either consonants or locations). MEG data were reconstructed using a current source distribution estimation in the classical frequency bands. We observed implicit verbal¿spatial binding only when participants successfully maintained the identity of consonants, which was associated with a selective increase in oscillatory activity over prefrontal regions in all frequency bands during the first half of the retention period and accompanied by increased activity in posterior brain regions. The increase in oscillatory activity in prefrontal areas was only observed during the verbal task, which suggests that this activity might be signaling neural processes specifically involved in cross-code binding. Current results are in agreement with proposals suggesting that the prefrontal cortex function as a ¿pointer¿ which indexes the features that belong together within an object.
International
Si
JCR
Si
Title
NEUROIMAGE
ISBN
1053-8119
Impact factor JCR
5,739
Impact info
Volume
49
Journal number
3
From page
2807
To page
2815
Month
FEBRERO
Ranking
Participants
  • Autor: Francisco del Pozo Guerrero (UPM)
  • Autor: Nazareth Perales Castellanos (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Bioingeniería y Telemedicina
  • Centro o Instituto I+D+i: Centro de tecnología Biomédica CTB
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)