Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 125 for “"Anterior Cingulate"”.
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Executive control in the anterior cingulate cortex
… executive control. One prefrontal subregion, the anterior cingulate cortex has previously been shown to be active in situations involving high conflict, presentation of salient, distracting stimuli, and error processing, i.e. situations that occur when learning new response contingencies, when …
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Anterior Cingulate Function Across Multiple-Time Scales Shapes Learning and Memory
… work, I studied how a part of the neocortex, the anterior cingulate cortex (ACC),has critical functions across multiple time-scales,from minutes to days-long learning,to weeks-long memory consolidation.The prefrontal cortex, and particularly the ACC portion, is known to be important for …
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Differential contributions of subregions of the dorsal anterior cingulate cortex to negative emotion in the common marmoset
The dorsal anterior cingulate cortex (dACC) has been implicated in a broad range of cognitive and emotional functions, including the processing of negative emotion. Furthermore, abnormalities in dACC activity have been associated with anxiety and depression, disorders in which negative emotion is …
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Foundations for Improved Models of Value-Based Decision-Making: Neural Correlates in the Anterior Cingulate Cortex and their Implications
… responses of neurons in the dorsal and subgenual anterior cingulate cortices (ACC) of rhesus macaques. Our findings in the dorsal anterior cingulate (dACC) are consistent with its direct involvement in the decision-making process. Moreover, neural responses to value in this region suggest an …
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Selective attention and the visual representation of object attributes in the ventrolateral prefrontal cortex and anterior cingulate cortex of the rhesus monkey
… the ventrolateral prefrontal cortex (VLPFC) and anterior cingulate cortex (ACC) while the monkey performed the task. Neuronal selectivity for matching rule, object attributes, attribute relevance, response choice, and congruency were assessed using multi-factor ANOVAs. Attribute-selective …
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Marmoset emotional regulation during adolescence and adulthood, with a particular focus on risk-taking and the role of the subgenual anterior cingulate cortex in motivation and affective biases
… specifically mood disorders, is the subgenual anterior cingulate cortex (sgACC). Overactivation of sgACC in humans is observed in depression, and reducing neuronal activity in sgACC using deep brain stimulation alleviates depressive symptoms (Mayberg et al., 2005). However, the mechanisms …
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Reinforcement Learning and the Error -Related Negativity: A Computational and Neurophysiological Investigation
… error-processing system associated with anterior cingulate cortex. The existence of the error-processing system has been inferred from the ""Error-Related Negativity,"" a component of the event-related brain potential elicited when human subjects commit errors in reaction-time tasks. It …
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Longitudinal Change In Regional Cortices And Fluid Intelligence
… such as prefrontal, parietal, temporal and anterior cingulate cortices were included in the P-FIT model and were hypothesized to be involved in fluid reasoning task. Therefore, in the current study, we examined latent growth curves (LGC) of longitudinal change in Gf, Gc, prefrontal cortex, …
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Dissecting emotion : towards a functional neuroimaging probe for affective disorders
… in the amygdala, ventral prefrontal cortex, and anterior cingulate cortex. We studied healthy individuals? responses to complex emotion paradigms to attempt to distinguish activity in these regions. We hypothesized that the amygdala mediates ?bottom-up? processing driven by emotional stimulus …
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Towards a mechanistic understanding of the neurobiological mechanisms underlying psychosis
… disorders, which is glutamate levels in the anterior cingulate cortex (ACC), as measured with magnetic resonance spectroscopy. In this chapter I aimed to replicate previous results that show differences in glutamate levels in psychosis and health. However, no statistically significant group …
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Anomalies of GABAergic system associated with HIV-1 infection
… to poor verbal fluency tasking, while in the anterior cingulate cortex it was associated with worse performance in broad spectrum of functional tests. Reduced concentration of GABA synthesizing enzymes in the anterior cingulate cortex results in the upregulation of astroglial-expressed GABA …
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Combined Aerobic and Cognitive Training Effects on Complex Brain Networks in Older Adults
… memory tasks. With past research implicating the anterior cingulate cortex and the hippocampus in changes associated with training programs in older adults, these were used as focal regions of interest. Of the original 73 participants, a subset of 29 participants were scanned using fMRI and had …
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Molecular and Functional Characterization of Pyramidal Cell Types in the Frontal Cortex of Mouse Brain
… by Ntsr1, Syt6 and Wfs1 in the visual cortex and anterior cingulate cortex respectively. We then applied viral mediated silencing of neural transmission using viral tethered toxins that target voltage gated calcium channels (VGCCs) Cav2.1 and Cav2.2. We found that the Wfs1 cell type in the …
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Anteromedial Thalamus Gates the Selection & Stabilization of Long-Term Memories
… to a distributed cortical network, with the anterior cingulate cortex playing a central role in remote memory retrieval. However, little is known about the mechanisms responsible for coordinating this process. Additionally, the intermediate memory representations in the brain and the circuits …
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The impact of stress on the prefrontal cortex: a view of how socioeconomic status impacts executive function
… cortex, inferior frontal cortex, insula, and anterior cingulate cortex. Within the bigger SES framework, SES was related to cortisol reactivity and executive function. SES differences were found in total grey matter and regional cortical thickness within the PFC including the insula and …
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Attentional Uncertainty in the Stroop Priming Task
… is extensive evidence that structures in the anterior attentional system (i.e. dorsolateral prefrontal cortex and anterior cingulate) are susceptible to normal aging processes, whereas structural changes in the posterior attentional system are minimal. Using the Stroop priming task, we …
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Performance Monitoring: Error Detection and the Error-Related Negativity in Choice-Related Time Tasks
… suggests that the component is generated in the anterior cingulate cortex. In choice reaction time tasks, the monitoring process compares a representation of the appropriate (correct) response with a representation of the response actually made. The ERN amplitude reflects the degree of mismatch, …
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Primate Ventromedial Prefrontal Cortex and the Physiological and Behavioural Dysfunction Characteristic of Mood and Anxiety Disorders
… two key subregions of the vmPFC – the subgenual anterior cingulate cortex (sgACC, area 25) and perigenual anterior cingulate cortex (pgACC, area 32) – in discrete dimensions of behaviour and physiology affected in psychiatric disorders. Specifically, the impact of over-activity is assessed on (i) …
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