Index of papers in April 2015 that mention
  • basal ganglia
Tor D. Wager, Jian Kang, Timothy D. Johnson, Thomas E. Nichols, Ajay B. Satpute, Lisa Feldman Barrett
Emotion-Predictive Brain Patterns: Relationships to Known Intrinsic Networks
For cortical, basal ganglia , and cerebellar networks, we used results from Buckner and colleagues [42—44] , who identified seven networks with coherent resting-state connectivity across 1,000 participants.
Emotion-Predictive Brain Patterns: Relationships to Known Intrinsic Networks
Each of the seven included a cortical network and correlated areas within the basal ganglia (BG) and cerebellum.
Emotion-Predictive Brain Patterns: Relationships to Known Intrinsic Networks
Different patterns across emotion categories were also discernable in subcortical zones including the amygdala, thalamus, brainstem/ cerebellum, and basal ganglia (Fig.
Network Co-activation Differences among Emotion Categories
Colors reflect membership in siX cerebral zones: Cortex, basal ganglia , cerebellum/brainstem, thalamus, amygdala, and hippocampus.
Network Co-activation Differences among Emotion Categories
Emotion patterns were distinguished by both their patterns of co-activation and by the regions that are ‘connectors.’ The anger category is characterized by relatively strong and uniform connections across cerebral zones compared to other emotion categories, with strong co-activation among cortical, basal ganglia , and cerebellar networks, and other regions, particularly the right amygdala.
Network Co-activation Differences among Emotion Categories
In disgust, by contrast, cortical networks connect to basal ganglia regions and serve as a bridge to an otherwise isolated cerebellum.
New Implications for Emotion Theories
The pattern of cortico-cerebellar connectivity differs markedly across emotion categories (see Table 2): In anger, fronto-parietal cortex is co-activated positively with amygdala and cerebellum, and the dorsal attention network is negatively associated with cerebellar activation; in disgust, somatomotor cortex associations with basal ganglia dominate; in fear, visual-subcortical (esp.
New Implications for Emotion Theories
In our results, the brainstem is also critical: In sadness, it is co-activated with the cerebellum only, whereas in other emotions it is much more integrated with the thalamus, basal ganglia , and cortex.
basal ganglia is mentioned in 17 sentences in this paper.
Topics mentioned in this paper:
Jyotika Bahuguna, Ad Aertsen, Arvind Kumar
AMSN
Therefore, we propose that the asymmetric striatal connectivity allows it to ‘sense’ small changes in the cortical activity reaching the striatum and to modulate the balance between ‘Go’ and ‘No-Go’ states of the basal ganglia accordingly.
AMSN
The presence of such dynamic DTT suggests several possible control mechanisms, that may set the bias towards either of the two pathways along the basal ganglia downstream nuclei, depending on the animal behavioral state, motivation and acquired learning.
Abstract
A typical Go/No-Go decision is suggested to be implemented in the brain via the activation of the direct or indirect pathway in the basal ganglia .
Abstract
We show that multiple mechanisms exist in the basal ganglia for biasing striatal output in favour of either the ‘Go' or the ‘No-Go' pathway.
Author Summary
The basal ganglia (BG) play a crucial role in a variety of cognitive and motor functions.
D1 MSNs require overall stronger input from cortex than D2 MSNs
when the cortex does not impose any preference for either direct or indirect pathways), the indirect pathway will dominate the striatal network dynamics and the ‘No-Go’ would be the default state of the basal ganglia .
Introduction
The basal ganglia (BG) are a set of nuclei, located at the base of the forebrain, which play a crucial role in a variety of motor and cognitive functions.
Introduction
The striatum is the main input stage of the basal ganglia , receiving inputs from widely distributed areas in the corteX [1] , and projecting to the BG output nuclei Globus Pallidus Interna (GPi) and Substantia Nigra (SNr) via the so-called direct and indirect pathways, respectively [2].
Introduction
Therefore, to understand the computations performed by the basal ganglia , it is of key importance to characterize the dynamical properties of striatal network activity.
Results
The striatal MSNs expressing D1 and D2 type dopamine receptors initiate the direct (‘Go’) and indirect (‘No-Go’) pathways of the basal ganglia , respectively.
basal ganglia is mentioned in 21 sentences in this paper.
Topics mentioned in this paper: