scholarly journals Psychosocial functioning is correlated with activation in the anterior cingulate cortex and left lateral prefrontal cortex during a verbal fluency task in euthymic bipolar disorder: A preliminary fMRI study

2013 ◽  
Vol 68 (3) ◽  
pp. 188-196 ◽  
Author(s):  
Yasushi Yoshimura ◽  
Yasumasa Okamoto ◽  
Keiichi Onoda ◽  
Go Okada ◽  
Shigeru Toki ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Prefrontal Cortex ◽  
Anterior Cingulate Cortex ◽  
Psychosocial Functioning ◽  
Verbal Fluency ◽  
Anterior Cingulate ◽  
Lateral Prefrontal Cortex ◽  
Verbal Fluency Task ◽  
Fmri Study ◽  
Fluency Task

A functional MRI study of verbal fluency in adults with bipolar disorder and their unaffected relatives

2010 ◽  
Vol 40 (12) ◽  
pp. 2025-2035 ◽  
Author(s):  
M. P. G. Allin ◽  
N. Marshall ◽  
K. Schulze ◽  
M. Walshe ◽  
M.-H. Hall ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Prefrontal Cortex ◽  
Verbal Fluency ◽  
Retrosplenial Cortex ◽  
Control Group ◽  
Verbal Fluency Task ◽  
Easy Condition ◽  
Bipolar Patients ◽  
Mri Study ◽  
Fluency Task

BackgroundIndividuals with a history of bipolar disorder demonstrate abnormalities of executive function, even during euthymia. The neural architecture underlying this and its relationship with genetic susceptibility for illness remain unclear.MethodWe assessed 18 remitted individuals with bipolar disorder, 19 of their unaffected first degree relatives and 19 healthy controls using functional magnetic resonance imaging (fMRI) and a paced verbal fluency task with two levels of difficulty.ResultsBipolar patients made significantly more errors in the easy level of the verbal fluency task than their relatives or controls. Analysis of variance of fMRI data demonstrated a significant main effect of group in a large cluster including retrosplenial cortex and adjacent precuneate cortex (x=7, y=−56, x=15). All three groups showed deactivation in these areas during task performance relative to a neutral or rest condition. Group differences comprised a lesser amount of deactivation in unaffected relatives compared with controls in the easy condition [F(2, 55)=3.42, p=0.04] and in unaffected relatives compared with bipolar patients in the hard condition [F(2, 55)=4.34, p=0.018]. Comparison with the control group indicated that both bipolar patients and their relatives showed similar deficits of deactivation in retrosplenial cortex and reduced activation of left prefrontal cortex.ConclusionsBipolar disorder may be associated with an inherited abnormality of a neural network incorporating left prefrontal cortex and bilateral retrosplenial cortex.

The activation of prefrontal cortex in Trail Making Test and Verbal Fluency Task

2011 ◽  
Vol 75 (0) ◽  
pp. 2AM057-2AM057
Author(s):  
Kazuhiro YASUNAGA ◽  
Toru YOSHIKAWA ◽  
Hiroyuki ITO ◽  
Hoshiko YAMAUCHI ◽  
Masayoshi OGURA ◽  
...  
Keyword(s):  
Prefrontal Cortex ◽  
Verbal Fluency ◽  
Trail Making Test ◽  
Verbal Fluency Task ◽  
Trail Making ◽  
Fluency Task

scholarly journals Neural correlates of executive function and working memory in the ‘at-risk mental state’

2009 ◽  
Vol 194 (1) ◽  
pp. 25-33 ◽  
Author(s):  
Matthew R. Broome ◽  
Pall Matthiasson ◽  
Paolo Fusar-Poli ◽  
James B. Woolley ◽  
Louise C. Johns ◽  
...  
Keyword(s):  
At Risk ◽  
Working Memory ◽  
Mental State ◽  
Verbal Fluency ◽  
Risk Group ◽  
Memory Task ◽  
Anterior Cingulate ◽  
Verbal Fluency Task ◽  
Fluency Task ◽  
At Risk Mental State

BackgroundPeople with prodromal symptoms have a very high risk of developing psychosis.AimsTo use functional magnetic resonance imaging to examine the neurocognitive basis of this vulnerability.MethodCross-sectional comparison of regional activation in individuals with an ‘at-risk mental state’ (at-risk group: n=17), patients with first-episode schizophreniform psychosis (psychosis group: n=10) and healthy volunteers (controls: n=15) during an overt verbal fluency task and an N-back working memory task.ResultsA similar pattern of between-group differences in activation was evident across both tasks. Activation in the at-risk group was intermediate relative to that in controls and the psychosis group in the inferior frontal and anterior cingulate cortex during the verbal fluency task and in the inferior frontal, dorsolateral prefrontal and parietal cortex during the N-back task.ConclusionsThe at-risk mental state is associated with abnormalities of regional brain function that are qualitatively similar to, but less severe than, those in patients who have recently presented with psychosis.

scholarly journals The Role of Intact Frontostriatal Circuits in Error Processing

2006 ◽  
Vol 18 (4) ◽  
pp. 651-664 ◽  
Author(s):  
Markus Ullsperger ◽  
D. Yves von Cramon
Keyword(s):  
Prefrontal Cortex ◽  
Basal Ganglia ◽  
Anterior Cingulate Cortex ◽  
Performance Monitoring ◽  
Brain Plasticity ◽  
Cingulate Cortex ◽  
Anterior Cingulate ◽  
Cortical Circuits ◽  
Lateral Prefrontal Cortex ◽  
Error Related Negativity

The basal ganglia have been suggested to play a key role in performance monitoring and resulting behavioral adjustments. It is assumed that the integration of prefrontal and motor cortico—striato—thalamo—cortical circuits provides contextual information to the motor anterior cingulate cortex regions to enable their function in performance monitoring. So far, direct evidence is missing, however. We addressed the involvement of frontostriatal circuits in performance monitoring by collecting event-related brain potentials (ERPs) and behavioral data in nine patients with focal basal ganglia lesions and seven patients with lateral prefrontal cortex lesions while they performed a flanker task. In both patient groups, the amplitude of the error-related negativity was reduced, diminishing the difference to the ERPs on correct responses. Despite these electrophysiological abnormalities, most of the patients were able to correct errors. Only in lateral prefrontal cortex patients whose lesions extended into the frontal white matter, disrupting the connections to the motor anterior cingulate cortex and the striatum, were error corrections severely impaired. In sum, the fronto—striato—thalamo—cortical circuits seem necessary for the generation of error-related negativity, even when brain plasticity has resulted in behavioral compensation of the damage. Thus, error-related ERPs in patients provide a sensitive measure of the integrity of the performance monitoring network.

scholarly journals Face selective patches in marmoset frontal cortex

2020 ◽  
Author(s):  
David J. Schaeffer ◽  
Janahan Selvanayagam ◽  
Kevin D. Johnston ◽  
Ravi S. Menon ◽  
Winrich A. Freiwald ◽  
...  
Keyword(s):  
Prefrontal Cortex ◽  
Frontal Cortex ◽  
Anterior Cingulate Cortex ◽  
Face Processing ◽  
New World ◽  
Anterior Cingulate ◽  
Old World ◽  
Lateral Prefrontal Cortex ◽  
Socially Relevant ◽  
High Level

AbstractPrimates have evolved the ability transmit important social information through facial expression. In humans and macaque monkeys, socially relevant face processing is accomplished via a distributed cortical and subcortical functional network that includes specialized patches in anterior cingulate cortex and lateral prefrontal cortex, regions usually associated with high-level cognition. It is unclear whether a similar network exists in New World primates, who diverged ~35 million years from Old World primates and have a less elaborated frontal cortex. The common marmoset (Callithrix jacchus) is a small New World primate that is ideally placed to address this question given the complex social repertoire inherent to this species (e.g., observational social learning; imitation; cooperative antiphonal calling). Here, we investigated the existence of a putative high-level face processing network in marmosets by employing ultra-high field (9.4 Tesla) task-based functional MRI (fMRI). We demonstrated that, like Old World primates, marmosets show differential activation in anterior cingulate cortex and lateral prefrontal cortex while they view socially relevant videos of marmoset faces. We corroborate the locations of these frontal regions by demonstrating both functional (via resting-state fMRI) and structural (via cellular-level tracing) connectivity between these regions and temporal lobe face patches. Given the evolutionary separation between macaques and marmosets, our results suggest this frontal network specialized for social face processing predates the separation between Platyrrhini and Catarrhine. These results give further credence to the marmoset as a viable preclinical modelling species for studying human social disorders.

scholarly journals Phase of Firing Coding of Learning Variables across Prefrontal Cortex, Anterior Cingulate Cortex and Striatum during Feature Learning

2019 ◽  
Author(s):  
Benjamin Voloh ◽  
Mariann Oemisch ◽  
Thilo Womelsdorf
Keyword(s):  
Prefrontal Cortex ◽  
Anterior Cingulate Cortex ◽  
Long Range ◽  
Cingulate Cortex ◽  
Temporal Coding ◽  
Anterior Cingulate ◽  
Prediction Errors ◽  
Lateral Prefrontal Cortex ◽  
Firing Rates ◽  
Reward Prediction

AbstractThe prefrontal cortex and striatum form a recurrent network whose spiking activity encodes multiple types of learning-relevant information. This spike-encoded information is evident in average firing rates, but finer temporal coding might allow multiplexing and enhanced readout across the connected the network. We tested this hypothesis in the fronto-striatal network of nonhuman primates during reversal learning of feature values. We found that neurons encoding current choice outcomes, outcome prediction errors, and outcome history in their firing rates also carried significant information in their phase-of-firing at a 10-25 Hz beta frequency at which they synchronized across lateral prefrontal cortex, anterior cingulate cortex and striatum. The phase-of-firing code exceeded information that could be obtained from firing rates alone, was strong for inter-areal connections, and multiplexed information at three different phases of the beta cycle that were offset from the preferred spiking phase of neurons. Taken together, these findings document the multiplexing of three different types of information in the phase-of-firing at an interareally shared beta oscillation frequency during goal-directed behavior.HighlightsLateral prefrontal cortex, anterior cingulate cortex and striatum show phase-of-firing encoding for outcome, outcome history and reward prediction errors.Neurons with phase-of-firing code synchronize long-range at 10-25 Hz.Spike phases encoding reward prediction errors deviate from preferred synchronization phases.Anterior cingulate cortex neurons show strongest long-range effects.

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