scholarly journals Daun02 Inactivation of Behaviorally Activated Fos-Expressing Neuronal Ensembles

2016 ◽  
pp. 8.36.1-8.36.17 ◽  
Author(s):  
Eisuke Koya ◽  
Gabriella Margetts-Smith ◽  
Bruce T. Hope
Keyword(s):  
Neuronal Ensembles

scholarly journals Information diversity in individual auditory cortical neurons is associated with functionally distinct coordinated neuronal ensembles

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jermyn Z. See ◽  
Natsumi Y. Homma ◽  
Craig A. Atencio ◽  
Vikaas S. Sohal ◽  
Christoph E. Schreiner
Keyword(s):  
Cortical Neurons ◽  
Single Neuron ◽  
Receptive Fields ◽  
Acoustic Feature ◽  
Neuronal Ensembles ◽  
Neuron Spike ◽  
Information Diversity ◽  
Feature Selectivity ◽  
Stimulus Features ◽  
Time Specific

AbstractNeuronal activity in auditory cortex is often highly synchronous between neighboring neurons. Such coordinated activity is thought to be crucial for information processing. We determined the functional properties of coordinated neuronal ensembles (cNEs) within primary auditory cortical (AI) columns relative to the contributing neurons. Nearly half of AI cNEs showed robust spectro-temporal receptive fields whereas the remaining cNEs showed little or no acoustic feature selectivity. cNEs can therefore capture either specific, time-locked information of spectro-temporal stimulus features or reflect stimulus-unspecific, less-time specific processing aspects. By contrast, we show that individual neurons can represent both of those aspects through membership in multiple cNEs with either high or absent feature selectivity. These associations produce functionally heterogeneous spikes identifiable by instantaneous association with different cNEs. This demonstrates that single neuron spike trains can sequentially convey multiple aspects that contribute to cortical processing, including stimulus-specific and unspecific information.

scholarly journals Entrained rhythmic activities of neuronal ensembles as perceptual memory of time interval

Nature ◽  
2008 ◽  
Vol 456 (7218) ◽  
pp. 102-106 ◽  
Author(s):  
Germán Sumbre ◽  
Akira Muto ◽  
Herwig Baier ◽  
Mu-ming Poo
Keyword(s):  
Time Interval ◽  
Perceptual Memory ◽  
Neuronal Ensembles

Rapid adaptation of brain–computer interfaces to new neuronal ensembles or participants via generative modelling

2021 ◽  
Author(s):  
Shixian Wen ◽  
Allen Yin ◽  
Tommaso Furlanello ◽  
M. G. Perich ◽  
L. E. Miller ◽  
...  
Keyword(s):  
Brain Computer Interfaces ◽  
Rapid Adaptation ◽  
Neuronal Ensembles ◽  
Computer Interfaces ◽  
Generative Modelling

scholarly journals Functional determinants of enhanced and depressed interareal information flow in nonrapid eye movement sleep between neuronal ensembles in rat cortex and hippocampus

SLEEP ◽  
2018 ◽  
Vol 41 (11) ◽  
Author(s):  
Umberto Olcese ◽  
Jeroen J Bos ◽  
Martin Vinck ◽  
Cyriel M A Pennartz
Keyword(s):  
Eye Movement ◽  
Information Flow ◽  
Rat Cortex ◽  
Neuronal Ensembles

scholarly journals Memory: Looking back and looking forward

2018 ◽  
Vol 2 ◽  
pp. 239821281879483 ◽  
Author(s):  
John P. Aggleton ◽  
Richard G. M. Morris
Keyword(s):  
Neural Plasticity ◽  
Imaging Studies ◽  
Activation Patterns ◽  
Memory Research ◽  
Neuronal Ensembles ◽  
Disadvantaged Populations ◽  
Episodic Memories ◽  
Source Of Information ◽  
Looking Back

This review brings together past and present achievements in memory research, ranging from molecular to psychological discoveries. Despite some false starts, major advances include our growing understanding of learning-related neural plasticity and the characterisation of different classes of memory. One striking example is the ability to reactivate targeted neuronal ensembles so that an animal will seemingly re-experience a particular memory, with the further potential to modify such memories. Meanwhile, human functional imaging studies can distinguish individual episodic memories based on voxel activation patterns. While the hippocampus continues to provide a rich source of information, future progress requires broadening our research to involve other sites. Related challenges include the need to understand better the role of glial–neuron interactions and to look beyond the synapse as the sole site of experience-dependent plasticity. Unmet goals include translating our neuroscientific knowledge in order to optimise learning and memory, especially among disadvantaged populations.

scholarly journals Mouse Corticospinal System Comprises Different Functional Neuronal Ensembles Depending On Their Hodology

2019 ◽  
Author(s):  
Rafael Olivares-Moreno ◽  
Mónica López-Hidalgo ◽  
Alain Altamirano-Espinoza ◽  
Adriana González-Gallardo ◽  
Anaid Antaramian ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Pyramidal Neurons ◽  
Functional Organization ◽  
Modular Organization ◽  
Subcortical Structures ◽  
Neuronal Ensembles ◽  
Synaptic Interactions ◽  
Spinal Cord Segment ◽  
Different Populations ◽  
Cortex Slices

Abstract Background: Movement performance depends on the synaptic interactions generated by coherent parallel sensorimotor cortical outputs to different downstream targets. The major outputs of the neocortex to subcortical structures are driven by pyramidal tract neurons (PTNs) located in layer 5B. One of the main targets of PTNs is the spinal cord through the corticospinal (CS) system, which is formed by a complex collection of distinct CS circuits. However, little is known about intracortical synaptic interactions that originate CS commands and how different populations of CS neurons are functionally organized. To further understand the functional organization of the CS system, we analyzed the activity of unambiguously identified CS neurons projecting to different zones of the same spinal cord segment using two-photon calcium imaging and retrograde neuronal tracers. Results: Sensorimotor cortex slices obtained from transgenic mice expressing GCaMP6 funder the Thy1 promoter were used to analyze the spontaneous calcium transients in layer 5 pyramidal neurons. Distinct subgroups of CS neurons projecting to dorsal horn and ventral areas of the same segment show more synchronous activity between them than with other subgroups. Conclusions: The results indicate that CS neurons projecting to different spinal cord zones segregated into functional ensembles depending on their hodology, suggesting that a modular organization of CS outputs controls sensorimotor behaviors in a coordinated manner.

Sign in / Sign up

Export Citation Format

Share Document