Surround inhibition is modulated by task difficulty
نویسندگان
چکیده
منابع مشابه
Attentional effort modulated by task difficulty
It has been assumed that stimulus discrimination in a visual task is performed with fixed attentive effort. Here we show that attention to the same pair of stimuli can be modulated by varying the task difficulty when a task requires the discrimination of only a small number of different stimuli. We used a matching-to-sample paradigm, where a test stimulus is presented after a sample stimulus. W...
متن کاملBehavioral Oscillations in Visual Attention Modulated by Task Difficulty
The spotlight of attention is full of discrete moments and operates periodically. Recently, it has been well-documented there were behavioral oscillations in visual attention, however, different periodicities were demonstrated. Task difficulty may be an important factor causing disagreement in attentional periodic patterns. The present study examined behavioral oscillations in visual attention ...
متن کاملInter-trial inhibition of attention to features is modulated by task relevance.
The Distractor Previewing Effect (DPE) is an inter-trial effect that arises in efficient visual searches where participants are asked to find a feature oddball in the display. Specifically, the DPE is the finding that an observer's ability to focus on an oddball target is impaired if, on the immediately preceding trial, no target was present and all distractors shared a visual feature with the ...
متن کاملPost-stimulus endogenous and exogenous oscillations are differentially modulated by task difficulty
We investigate the modulation of post-stimulus endogenous and exogenous oscillations when a visual discrimination is made more difficult. We use exogenous frequency tagging to induce steady-state visually evoked potentials (SSVEP) while subjects perform a face-car discrimination task, the difficulty of which varies on a trial-to-trial basis by varying the noise (phase coherence) in the image. W...
متن کاملMemory-driven attentional capture is modulated by temporal task demands
Previous research has shown that attention is biased towards items that match the current content of working memory (memory-driven attentional capture), but it remains unclear whether this effect is automatic or under voluntary control. Participants memorized a colour for subsequent recall and searched for a target shape among distractors that included a colour singleton which matched or mismat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Clinical Neurophysiology
سال: 2010
ISSN: 1388-2457
DOI: 10.1016/j.clinph.2009.09.010