An fMRI Study of Arithmetic Training: Different Activation Patterns of Basal Ganglia Due to Differences in Training Procedures

2011 ◽  
Author(s):  
Arava Y. Kallai ◽  
Christian D. Schunn ◽  
Julie A. Fiez
Keyword(s):  
Basal Ganglia ◽  
Activation Patterns ◽  
Fmri Study

scholarly journals Syntax-Sensitive Regions of the Posterior Inferior Frontal Gyrus and the Posterior Temporal Lobe Are Differentially Recruited by Production and Perception

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
William Matchin ◽  
Emily Wood
Keyword(s):  
Temporal Lobe ◽  
Inferior Frontal Gyrus ◽  
Regions Of Interest ◽  
Syntactic Processing ◽  
Activation Patterns ◽  
Fmri Study ◽  
Left Posterior ◽  
Lesion Symptom Mapping

Abstract Matchin and Hickok (2020) proposed that the left posterior inferior frontal gyrus (PIFG) and the left posterior temporal lobe (PTL) both play a role in syntactic processing, broadly construed, attributing distinct functions to these regions with respect to production and perception. Consistent with this hypothesis, functional dissociations between these regions have been demonstrated with respect to lesion–symptom mapping in aphasia. However, neuroimaging studies of syntactic comprehension typically show similar activations in these regions. In order to identify whether these regions show distinct activation patterns with respect to syntactic perception and production, we performed an fMRI study contrasting the subvocal articulation and perception of structured jabberwocky phrases (syntactic), sequences of real words (lexical), and sequences of pseudowords (phonological). We defined two sets of language-selective regions of interest (ROIs) in individual subjects for the PIFG and the PTL using the contrasts [syntactic > lexical] and [syntactic > phonological]. We found robust significant interactions of comprehension and production between these 2 regions at the syntactic level, for both sets of language-selective ROIs. This suggests a core difference in the function of these regions with respect to production and perception, consistent with the lesion literature.

Distinct activation patterns for accurate vs. inaccurate naming of actions and objects: An fMRI study with stroke patients with chronic aphasia

2007 ◽  
Vol 103 (1-2) ◽  
pp. 150-151 ◽  
Author(s):  
W.A. Postman-Caucheteux ◽  
S. Hoffman ◽  
D. Picchioni ◽  
J. McArdle ◽  
R. Birn ◽  
...  
Keyword(s):  
Stroke Patients ◽  
Activation Patterns ◽  
Fmri Study ◽  
Chronic Aphasia

Future Trends in Functional MRI

2018 ◽  
pp. 230-240
Keyword(s):  
Imaging Technique ◽  
Diffusion Imaging ◽  
Tumor Resection ◽  
Clot Lysis ◽  
Activation Patterns ◽  
Imaging Tool ◽  
Fmri Study ◽  
Activation Response ◽  
Brain Fmri ◽  
The Brain

While MRI became a standard workhorse in neurology/neurosurgery within a few years of installation of the first MRI unit, fMRI, in spite of being a powerful imaging tool, remains primarily a research tool, even though the first fMRI study was published 25 years ago. Scientifically, fMRI has made a major impact, judging by the number of PubMed citations and publications in high-impact journals. In cognitive neuroscience, fMRI is the most commonly used imaging technique in published peer-reviewed articles. fMRI is used clinically for preoperative brain mapping in neurosurgery to delineate the proximity of the lesion (tumor) to eloquent areas of the brain, with the aim of achieving adequate tumor resection with minimal functional damage to the brain. fMRI connectivity and activation maps have identified altered activation patterns and resting-state networks in psychiatric disorders like schizophrenia, bipolar disorder, autism, and Alzheimer’s disease, but fMRI is still not a standard diagnostic procedure in psychiatry. Diffusion imaging technique is being used for triaging stroke patients who are likely to respond to stroke therapy (embolectomy and/or clot lysis). Meanwhile, major collaborative fMRI studies are in progress in many institutions to collect normative data on connectivity, activation response, and behavioral response as well as correlation among them. Studies focused on specific neuropsychiatric disorders also have been initiated by the National Institutes of Health. All this is a reflection of the huge potential application of fMRI in clinical practice envisioned by the scientific community.

Basal Ganglia Activation induced during Typing Tasks. An fMRI study at 3T.

NeuroImage ◽  
1998 ◽  
Vol 7 (4) ◽  
pp. S993
Author(s):  
E. Kraft ◽  
AJ-W. Chen ◽  
KK. Kwong ◽  
BR. Rosen ◽  
M. Anderson ◽  
...  
Keyword(s):  
Basal Ganglia ◽  
Fmri Study

scholarly journals Hyperdirect insula-basal-ganglia pathway and adult-like maturity of global brain responses predict inhibitory control in children

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Weidong Cai ◽  
Katherine Duberg ◽  
Aarthi Padmanabhan ◽  
Rachel Rehert ◽  
Travis Bradley ◽  
...  
Keyword(s):  
Basal Ganglia ◽  
Inhibitory Control ◽  
Effective Connectivity ◽  
Meta Analysis ◽  
Self Regulation ◽  
Brain Organization ◽  
Activation Patterns ◽  
Maturation Index ◽  
The Right ◽  
Global Brain

Abstract Inhibitory control is fundamental to children’s self-regulation and cognitive development. Here we investigate cortical-basal ganglia pathways underlying inhibitory control in children and their adult-like maturity. We first conduct a comprehensive meta-analysis of extant neurodevelopmental studies of inhibitory control and highlight important gaps in the literature. Second, we examine cortical-basal ganglia activation during inhibitory control in children ages 9–12 and demonstrate the formation of an adult-like inhibitory control network by late childhood. Third, we develop a neural maturation index (NMI), which assesses the similarity of brain activation patterns between children and adults, and demonstrate that higher NMI in children predicts better inhibitory control. Fourth, we show that activity in the subthalamic nucleus and its effective connectivity with the right anterior insula predicts children’s inhibitory control. Fifth, we replicate our findings across multiple cohorts. Our findings provide insights into cortical-basal ganglia circuits and global brain organization underlying the development of inhibitory control.

Neural changes in the cortico-basal ganglia network during online statistical sequence learning: An fMRI study

2011 ◽  
Vol 71 ◽  
pp. e141
Author(s):  
Dilshat Abla ◽  
Takeshi Asamizuya ◽  
Kenichi Ueno ◽  
Pei Sun ◽  
Kang Cheng ◽  
...  
Keyword(s):  
Basal Ganglia ◽  
Sequence Learning ◽  
Fmri Study

44. The cerebellum, basal ganglia and motor timing in movement disorders. Behavioral and fMRI study

2014 ◽  
Vol 125 (5) ◽  
pp. e39
Author(s):  
M. Bareš ◽  
I. Husárová ◽  
P. Filip ◽  
R. Mareček ◽  
M. Mikl ◽  
...  
Keyword(s):  
Basal Ganglia ◽  
Movement Disorders ◽  
Motor Timing ◽  
Fmri Study

scholarly journals Age-Related Frontal Hyperactivation Observed across Different Working Memory Tasks: An fMRI Study

2012 ◽  
Vol 25 (4) ◽  
pp. 351-361 ◽  
Author(s):  
Mohammad Fakhri ◽  
Hajir Sikaroodi ◽  
Farid Maleki ◽  
Mohammad Ali Oghabian ◽  
Hosein Ghanaati
Keyword(s):  
Working Memory ◽  
Age Groups ◽  
Auditory Task ◽  
Activation Patterns ◽  
Age Related ◽  
Feature Processing ◽  
Fmri Study ◽  
Potential Impact ◽  
Effect Of Age ◽  
Compensatory Effort

Purpose:To evaluate patterns of activation, convergence and divergence of three functional magnetic resonance imaging (fMRI) Working Memory (WM) tasks in two different age groups. We want to understand potential impact of task and subjects’ age on WM activations as well as most important areas with regard to WM functions.Materials and methods:Thirty-five healthy volunteers completed visual, verbal, and novel auditory WM tasks. The subjects were selected from age extremes to depict possible impact of normal aging. The General Linear Model was used to report significant activations and the effect of age group. Contrasts revealed differences in activation between tasks, and Combined Task Analysis was performed to determine common regions of activation across tasks.Results:Most of the observed differences between the tasks were seen in areas that were responsible for feature processing. Frontal regions were mainstay activation areas, regardless of the utilized stimulus. We found an age-related reduction in activity of visual (in visually-presented tasks) and auditory (in auditory task) cortices but an age-related increase in prefrontal cortex for all tasks.Conclusion:Regardless of the type of the task stimuli, frontal regions are the most important activation areas in WM processing. These areas are also main targets of age-related changes with regard to activation patterns. Our results also indicate that prefrontal overactivity in working memory might be a compensatory effort to mask age-related decline in sensory processing.

Sign in / Sign up

Export Citation Format

Share Document