کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10455574 921187 2014 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Challenging perceptual tasks require more attention: The influence of task difficulty on the N1 effect of temporal orienting
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب شناختی
پیش نمایش صفحه اول مقاله
Challenging perceptual tasks require more attention: The influence of task difficulty on the N1 effect of temporal orienting
چکیده انگلیسی
Both filter and resource models of attention suggest an influence of task difficulty on the size of early attention effects. As for temporal orienting, the idea that early effects are modulated by task difficulty has not been tested directly, so far. To fill this empirical gap, the present study used an auditory temporal-orienting task, in which two differently pitched pure tones served as targets. To manipulate perceptual difficulty, the pitch difference between the targets was either small or large. Temporal orienting enhanced the N1 component of the auditory event-related potential. This early, sensory effect tended to be larger in the more difficult condition, particularly over the frontal scalp. Notably, increasing task difficulty affected predominantly the processing of attended stimuli. Hence, temporal orienting may operate by increasing processing resources or gain settings for the attended time point - rather than by withdrawing resources from the unattended time point.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain and Cognition - Volume 84, Issue 1, February 2014, Pages 153-163
نویسندگان
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