Brain activity related to orienting of attention with spatial cues and brain responses to attentional targets are influenced the probabilistic contingency between cues and targets. Compared to predictive cues, cues predicting at chance the location of targets reduce the filtering out of uncued locations and the costs in reorienting attention to targets presented at these locations. Slagter et al. (2016) have recently suggested that the larger target related P1 component that is found in the hemisphere ipsilateral to validly cued targets reflects stimulus-driven inhibition in the processing of the unstimulated side of space contralateral to the same hemisphere. Here we verified whether the strength of this inhibition and the amplitude of the corresponding P1 wave are modulated by the probabilistic link between cues and targets. Healthy participants performed a task of endogenous orienting once with predictive and once with non-predictive directional cues. In the non-predictive condition we observed a drop in the amplitude of the P1 ipsilateral to the target and in the costs of reorienting. No change in the inter-hemispheric latencies of the P1 was found between the two predictive conditions. The N1 facilitatory component was unaffected by predictive cuing. These results show that the predictive context modulates the strength of the inhibitory P1 response and that this modulation is not matched with changes in the inter-hemispheric interaction between the P1 generators of the two hemispheres.

Changes in predictive cuing modulate the hemispheric distribution of the P1 inhibitory response to attentional targets / Lasaponara, Stefano; D’ Onofrio, Marianna; Dragone, Alessio; Pinto, Mario; Caratelli, Ludovica; Doricchi, Fabrizio. - In: NEUROPSYCHOLOGIA. - ISSN 0028-3932. - ELETTRONICO. - 99:(2017), pp. 156-164. [10.1016/j.neuropsychologia.2017.03.010]

Changes in predictive cuing modulate the hemispheric distribution of the P1 inhibitory response to attentional targets

Lasaponara, Stefano;D’ Onofrio, Marianna;Dragone, Alessio;Pinto, Mario;Doricchi, Fabrizio
2017

Abstract

Brain activity related to orienting of attention with spatial cues and brain responses to attentional targets are influenced the probabilistic contingency between cues and targets. Compared to predictive cues, cues predicting at chance the location of targets reduce the filtering out of uncued locations and the costs in reorienting attention to targets presented at these locations. Slagter et al. (2016) have recently suggested that the larger target related P1 component that is found in the hemisphere ipsilateral to validly cued targets reflects stimulus-driven inhibition in the processing of the unstimulated side of space contralateral to the same hemisphere. Here we verified whether the strength of this inhibition and the amplitude of the corresponding P1 wave are modulated by the probabilistic link between cues and targets. Healthy participants performed a task of endogenous orienting once with predictive and once with non-predictive directional cues. In the non-predictive condition we observed a drop in the amplitude of the P1 ipsilateral to the target and in the costs of reorienting. No change in the inter-hemispheric latencies of the P1 was found between the two predictive conditions. The N1 facilitatory component was unaffected by predictive cuing. These results show that the predictive context modulates the strength of the inhibitory P1 response and that this modulation is not matched with changes in the inter-hemispheric interaction between the P1 generators of the two hemispheres.
EEG; ERPs; neglect; P1/N1; predictive cueing; experimental and cognitive psychology; cognitive neuroscience; behavioral neuroscience
01 Pubblicazione su rivista::01a Articolo in rivista
Changes in predictive cuing modulate the hemispheric distribution of the P1 inhibitory response to attentional targets / Lasaponara, Stefano; D’ Onofrio, Marianna; Dragone, Alessio; Pinto, Mario; Caratelli, Ludovica; Doricchi, Fabrizio. - In: NEUROPSYCHOLOGIA. - ISSN 0028-3932. - ELETTRONICO. - 99:(2017), pp. 156-164. [10.1016/j.neuropsychologia.2017.03.010]
File allegati a questo prodotto
File Dimensione Formato  
Lasaponara_Changes_2017.pdf

solo utenti autorizzati

Note: Articolo principale
Tipologia: Documento in Post-print (versione successiva alla peer review e accettata per la pubblicazione)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 950.1 kB
Formato Adobe PDF
950.1 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/958665
Citazioni
  • ???jsp.display-item.citation.pmc??? 2
  • Scopus 17
  • ???jsp.display-item.citation.isi??? 15
social impact