منابع مشابه
Motivation sharpens exogenous spatial attention.
Although both attention and motivation affect behavior, how these 2 systems interact is currently unknown. To address this question, 2 experiments were conducted in which participants performed a spatially cued forced-choice localization task under varying levels of motivation. Participants were asked to indicate the location of a peripherally cued target while ignoring a distracter. Motivation...
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In the course of viral infection, the immune system exploits only a fraction of the available CTL repertoire and focuses on a few of a myriad of potentially antigenic peptides. This phenomenon, known as immunodominance, depends on a number of factors, including antigen processing and transport, MHC binding, competition for antigen-presenting cells, availability of the CD8 T cell repertoire and ...
متن کاملOrientation Selectivity Sharpens Motion Detection in Drosophila
Detecting the orientation and movement of edges in a scene is critical to visually guided behaviors of many animals. What are the circuit algorithms that allow the brain to extract such behaviorally vital visual cues? Using in vivo two-photon calcium imaging in Drosophila, we describe direction selective signals in the dendrites of T4 and T5 neurons, detectors of local motion. We demonstrate th...
متن کاملBRIEF REPORTS Motivation Sharpens Exogenous Spatial Attention
Although both attention and motivation affect behavior, how these 2 systems interact is currently unknown. To address this question, 2 experiments were conducted in which participants performed a spatially cued forced-choice localization task under varying levels of motivation. Participants were asked to indicate the location of a peripherally cued target while ignoring a distracter. Motivation...
متن کاملReward Sharpens Orientation Coding Independently of Attention
It has long been known that rewarding improves performance. However it is unclear whether this is due to high level modulations in the output modules of associated neural systems or due to low level mechanisms favoring more "generous" inputs? Some recent studies suggest that primary sensory areas, including V1 and A1, may form part of the circuitry of reward-based modulations, but there is no d...
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ژورنال
عنوان ژورنال: Nature
سال: 1991
ISSN: 0028-0836,1476-4687
DOI: 10.1038/351430a0