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Showing 1 to 20 of 183 for “"cingulate"”.
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Executive control in the anterior cingulate cortex
… 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 previously …
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Hippocampal modulation of cingulate cortex and limbic thalamus during learning
… rabbits with the combined lesions of posterior cingulate cortex and subiculum in Experiment 1 as after the separate lesions in a previous study (Gabriel et al, 1987). The frequency of CR was also greater in rabbits with the combined lesions during early training. This result suggests that both …
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Anterior Cingulate Function Across Multiple-Time Scales Shapes Learning and Memory
… 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 goal-directed …
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The Neurobiology of Social Cognition: Role of the Posterior Cingulate Cortex
… circuitry for social cognition. The posterior cingulate (PCC) is believed to be a key node in both the DMN and in social cognition. Human and non-human primate studies have demonstrated a role for the PCC in outcome monitoring: it tracks rewards, subjective values of choices, task engagement …
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Amygdalar Modulation of the Medial Geniculate Nucleus and Cingulate Cortex in Discriminative Avoidance Training
Neurons in A29 and the lateral nucleus of the amygdala (LA) characteristically develop maximal dTIA in late stages of DAL. Experiment II tested the hypothesis that LA nucleus is responsible for the late dTIA in A29. As hypothesized, LA nuclear excitotoxic lesions decreased dTIA in A29. Moreover, …
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Functional Connectivity of the Posterior Cingulate in Mild Cognitive Impairment and Alzheimer's Disease
… that reduced connectivity between the posterior cingulate cortex (PCC) and associated brain regions may make an important contribution in this regard, as changes in the PCC/precuneus and entorhinal cortex are implicated as early biomarkers for AD. The current study used functional connectivity …
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Heading Disorientation in Amnestic Mild Cognitive Impairment is Correlated with Hypometabolism in the Posterior Cingulate Cortex
… hypometabolism in bilateral precuneus, posterior cingulate gyri, right crus cerebelli, cerebellar vermis, right anterior and middle cingulate gyri, right superior and middle frontal gyri, left inferior parietal region, and the left angular gyrus. (uncorrected p<0.05). Decrease in scores of part B …
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Effects of Septal and Cingulate Cortex Lesions on Conditioned Suppressionof Activity and Avoidance Behavior in Rats
Made available in DSpace on 2014-12-08T23:01:21Z (GMT). No. of bitstreams: 1 6511883.pdf: 1941098 bytes, checksum: 6682cee0ee85cc3a7d48f50ccbea6280 (MD5) Previous issue date: 1965
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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
… 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
… 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 responses were …
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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
… 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 underlying the …
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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 is …
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Functional Connectivity of Reward Networks: Characterizing Mechanistic Underpinnings Involved in Positive Affect Deficits within Social Anxiety Disorder
… (i.e., OFC and insula, OFC and subgenual cingulate, insula and cingulate, and cingulate and subgenual cingulate) and diminished PA were present in individuals with SAD, but not controls. Lastly, results demonstrated that individuals with SAD had higher variability in their reward …
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Longitudinal Change In Regional Cortices And Fluid Intelligence
… 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, parietal …
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Dissecting emotion : towards a functional neuroimaging probe for affective disorders
… 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 content, and …
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Diffusion Tensor Anisotropy in the Cingulum in Borderline and Schizotypal Personality Disorder
… participants (HC). The anterior and posterior cingulate were manually traced on all participants and then volume and fractional anisotropy (FA) comparisons were conducted across the groups for the left and right anterior and posterior cingulate. Compared with HC, SPD patients had smaller …
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Brainstem cholinergic modulation of the limbic learning circuit
… (anterior and medial dorsal) thalamic nuclei and cingulate cortex as rabbits learned to locomote after a foot-shock predictive tone (CS+) and to ignore another tone (CS$-$) not predictive of shock (Gabriel et al., Behav. Brain Res., 1991, 46, 175-185). This study examined a role of cholinergic …
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