کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
921195 920759 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Temporal regularity effects on pre-attentive and attentive processing of deviance
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
پیش نمایش صفحه اول مقاله
Temporal regularity effects on pre-attentive and attentive processing of deviance
چکیده انگلیسی

Temporal regularity allows predicting the temporal locus of future information thereby potentially facilitating cognitive processing. We applied event-related brain potentials (ERPs) to investigate how temporal regularity impacts pre-attentive and attentive processing of deviance in the auditory modality. Participants listened to sequences of sinusoidal tones differing exclusively in pitch. The inter-stimulus interval (ISI) in these sequences was manipulated to convey either isochronous or random temporal structure. In the pre-attentive session, deviance processing was unaffected by the regularity manipulation as evidenced in three event-related-potentials (ERPs): mismatch negativity (MMN), P3a, and reorienting negativity (RON). In the attentive session, the P3b was smaller for deviant tones embedded in irregular temporal structure, while the N2b component remained unaffected. These findings confirm that temporal regularity can reinforce cognitive mechanisms associated with the attentive processing of deviance. Furthermore, they provide evidence for the dynamic allocation of attention in time and dissociable pre-attentive and attention-dependent temporal processing mechanisms.


► Temporal regularity facilitates attentive processing of deviance.
► Larger P3b effect for isochronous than for random stimulus presentation.
► P3b may index the quality of stimulus-driven synchronization of attention.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biological Psychology - Volume 87, Issue 1, April 2011, Pages 146–151
نویسندگان
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