کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5041406 1370458 2018 17 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
The role of multisensory interplay in enabling temporal expectations
ترجمه فارسی عنوان
نقش فعل و انفعال چند حسی در قادر ساختن انتظارات زمانی
کلمات کلیدی
TE؛ انتظارات زمان / انتظارات زماني؛ IE؛ بازده معکوس؛ MSI؛ متقابل چند نفره؛ EEG؛ الکتروانسفالوگرافی؛ A؛ صوتی / شنوایی؛ V؛ بصری؛ AV؛ سمعی و بصری؛ RT؛ زمان پاسخ؛ انتظارات زماني؛ orienting temporal؛ interp
TE; temporal expectation/temporal expectancy; IE; inverse efficiency; MSI; multisensory interplay; EEG; electroencephalography; A; audio/auditory; V; visual; AV; audiovisual; RT; response time; Temporal expectation; Temporal orienting; Multisensory interp
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب شناختی
چکیده انگلیسی

•Introducing new multisensory paradigm to study temporal expectation (TE) in humans.•Performance facilitation of multisensory interplay (MSI) interacts with TE benefit.•MSI (compared to unisensory) allows built-up of TE even in highly noisy environments.•TE is not transferred across modalities – evidence for modality-specific TE networks.•TE adapt quickly to new contexts and cover large time windows in statistical fashion.

Temporal regularities can guide our attention to focus on a particular moment in time and to be especially vigilant just then. Previous research provided evidence for the influence of temporal expectation on perceptual processing in unisensory auditory, visual, and tactile contexts. However, in real life we are often exposed to a complex and continuous stream of multisensory events. Here we tested – in a series of experiments – whether temporal expectations can enhance perception in multisensory contexts and whether this enhancement differs from enhancements in unisensory contexts. Our discrimination paradigm contained near-threshold targets (subject-specific 75% discrimination accuracy) embedded in a sequence of distractors. The likelihood of target occurrence (early or late) was manipulated block-wise. Furthermore, we tested whether spatial and modality-specific target uncertainty (i.e. predictable vs. unpredictable target position or modality) would affect temporal expectation (TE) measured with perceptual sensitivity (d′) and response times (RT). In all our experiments, hidden temporal regularities improved performance for expected multisensory targets. Moreover, multisensory performance was unaffected by spatial and modality-specific uncertainty, whereas unisensory TE effects on d′ but not RT were modulated by spatial and modality-specific uncertainty. Additionally, the size of the temporal expectation effect, i.e. the increase in perceptual sensitivity and decrease of RT, scaled linearly with the likelihood of expected targets. Finally, temporal expectation effects were unaffected by varying target position within the stream. Together, our results strongly suggest that participants quickly adapt to novel temporal contexts, that they benefit from multisensory (relative to unisensory) stimulation and that multisensory benefits are maximal if the stimulus-driven uncertainty is highest. We propose that enhanced informational content (i.e. multisensory stimulation) enables the robust extraction of temporal regularities which in turn boost (uni-)sensory representations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cognition - Volume 170, January 2018, Pages 130-146
نویسندگان
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