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Social and Behavioral Sciences Commons™
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Full-Text Articles in Social and Behavioral Sciences
Specific Contributions Of Ventromedial, Anterior Cingulate, And Lateral Prefrontal Cortex For Attentional Selection And Stimulus Valuation., Daniel Kaping, Martin Vinck, R Matthew Hutchison, Stefan Everling, Thilo Womelsdorf
Specific Contributions Of Ventromedial, Anterior Cingulate, And Lateral Prefrontal Cortex For Attentional Selection And Stimulus Valuation., Daniel Kaping, Martin Vinck, R Matthew Hutchison, Stefan Everling, Thilo Womelsdorf
Brain and Mind Institute Researchers' Publications
Attentional control ensures that neuronal processes prioritize the most relevant stimulus in a given environment. Controlling which stimulus is attended thus originates from neurons encoding the relevance of stimuli, i.e. their expected value, in hand with neurons encoding contextual information about stimulus locations, features, and rules that guide the conditional allocation of attention. Here, we examined how these distinct processes are encoded and integrated in macaque prefrontal cortex (PFC) by mapping their functional topographies at the time of attentional stimulus selection. We find confined clusters of neurons in ventromedial PFC (vmPFC) that predominantly convey stimulus valuation information during attention shifts. …
Visual Search For Smoking Stimuli: Detection And Distraction, Jason A. Oliver
Visual Search For Smoking Stimuli: Detection And Distraction, Jason A. Oliver
USF Tampa Graduate Theses and Dissertations
Extensive research has shown that the attentional systems of addicted individuals are biased towards drug-related stimuli, but despite several decades of effort these results have frequently been inconsistent. Though commonly believed to result from addiction and dependence, cognitive research would suggest that frequent exposure to drug-related stimuli could affect the attentional processing of drug-related cues even if no actual drug use occurs. The present investigation examined attentional bias for smoking cues using a novel visual search paradigm amongst smokers currently in nicotine withdrawal and fully satiated smokers, as well as a non-smoker control group. Variables related to smoking behavior, as …
The Role Of Contextual Associations In The Selection Of Objects, Noah Patrick Sulman
The Role Of Contextual Associations In The Selection Of Objects, Noah Patrick Sulman
USF Tampa Graduate Theses and Dissertations
This paper describes a sequence of experiments addressing basic questions about the control of visual attention and the relationship between attention and object recognition. This work reviews compelling findings addressing attentional control on the basis of high-level perceptual properties. In five experiments observers were presented with a rapid sequence of object photographs and instructed to either detect or selectively encode a verbally cued object category. When these object categories (e.g. "baseball") were preceded by contextual images associated with a given object category (e.g. "baseball diamond"), observers were less likely to accurately report information about the target item. This effect obtained …
The Role Of Perceptual Processes In The Use Of And Willingness To Use Professional Health Care Services, Luis Omar Rivera
The Role Of Perceptual Processes In The Use Of And Willingness To Use Professional Health Care Services, Luis Omar Rivera
Open Access Theses & Dissertations
To better address ethnic health disparities, it is imperative that we understand the psychological processes that shape people's use of and willingness to use professional health care services. The current research proposes and tests a model in which people's attentional orientation toward context discourages them from seeking professional health care services because (a) attentional orientation toward context encourages people to attribute symptoms of illness to external/environmental factors and (b) attributing symptoms of illness to external/environmental factors is associated with less use of professional health care services. The results of two studies show mixed support for the proposed model. Consistent with …
Pcbs And Measures Of Attention And Impulsivity On A Continuous Performance Task Of Young Mohawk Adults, Bita Behforooz
Pcbs And Measures Of Attention And Impulsivity On A Continuous Performance Task Of Young Mohawk Adults, Bita Behforooz
Legacy Theses & Dissertations (2009 - 2024)
Past animal and human studies have shown that exposure to PCBs can result in a wide range of negative toxic effects. However, only a few studies have investigated the relationship between PCB exposure and attention and impulsivity. The present study examined the relationship between current body burden levels of PCBs and attention and impulsivity in young adults ages 17 to 21 from the Mohawk Nation of Akwesasne. The community is concerned because PCBs from industrial effluent have contaminated the local ecology and entered the Mohawk's food chain. Attention and impulsivity were measured by errors of omission and errors of commission …