کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5631033 1580854 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Temporal expectancies driven by self- and externally generated rhythms
ترجمه فارسی عنوان
انتظارات طولانی مدت توسط ریتم های تولید شده توسط خود و خارج ایجاد می شود
کلمات کلیدی
بهره برداری ریتمیک، کراس مودال، جذب، نوسان انتظارات زمانی،
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب شناختی
چکیده انگلیسی


- Temporal expectancies can be driven by rhythms or by the mere passage of time.
- We conceived a paradigm using EEG that tests for both these forms of expectancy.
- We compared self-generated and externally generated rhythms.
- We found evidence for both expectancy processes working in parallel.

The dynamic attending theory proposes that rhythms entrain periodic fluctuations of attention which modulate the gain of sensory input. However, temporal expectancies can also be driven by the mere passage of time (foreperiod effect). It is currently unknown how these two types of temporal expectancy relate to each other, i.e. whether they work in parallel and have distinguishable neural signatures. The current research addresses this issue. Participants either tapped a 1 Hz rhythm (active task) or were passively presented with the same rhythm using tactile stimulators (passive task). Based on this rhythm an auditory target was then presented early, in synchrony, or late. Behavioural results were in line with the dynamic attending theory as RTs were faster for in- compared to out-of-synchrony targets. Electrophysiological results suggested self-generated and externally induced rhythms to entrain neural oscillations in the delta frequency band. Auditory ERPs showed evidence of two distinct temporal expectancy processes. Both tasks demonstrated a pattern which followed a linear foreperiod effect. In the active task, however, we also observed an ERP effect consistent with the dynamic attending theory. This study shows that temporal expectancies generated by a rhythm and expectancy generated by the mere passage of time can work in parallel and sheds light on how these mechanisms are implemented in the brain.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NeuroImage - Volume 156, 1 August 2017, Pages 352-362
نویسندگان
, , , ,