scholarly journals Spatial Navigation and the Central Complex: Sensory Acquisition, Orientation, and Motor Control

2017 ◽  
Vol 11 ◽  
Author(s):  
Adrienn G. Varga ◽  
Nicholas D. Kathman ◽  
Joshua P. Martin ◽  
Peiyuan Guo ◽  
Roy E. Ritzmann
Keyword(s):  
Motor Control ◽  
Spatial Navigation ◽  
Central Complex

scholarly journals Learning long temporal sequences in spiking networks by multiplexing neural oscillations

2019 ◽  
Author(s):  
Philippe Vincent-Lamarre ◽  
Matias Calderini ◽  
Jean-Philippe Thivierge
Keyword(s):  
Motor Control ◽  
Neural Activity ◽  
Spatial Navigation ◽  
Neural Activation ◽  
Speech Generation ◽  
Phase Precession ◽  
Spiking Networks ◽  
External Stimuli ◽  
Temporal Sequences ◽  
Theta Phase Precession

Many cognitive and behavioral tasks – such as interval timing, spatial navigation, motor control and speech – require the execution of precisely-timed sequences of neural activation that cannot be fully explained by a succession of external stimuli. We show how repeatable and reliable patterns of spatiotemporal activity can be generated in chaotic and noisy spiking recurrent neural networks. We propose a general solution for networks to autonomously produce rich patterns of activity by providing a multi-periodic oscillatory signal as input. We show that the model accurately learns a variety of tasks, including speech generation, motor control and spatial navigation. Further, the model performs temporal rescaling of natural spoken words and exhibits sequential neural activity commonly found in experimental data involving temporal processing. In the context of spatial navigation, the model learns and replays compressed sequences of place cells and captures features of neural activity such as the emergence of ripples and theta phase precession. Together, our findings suggest that combining oscillatory neuronal inputs with different frequencies provides a key mechanism to generate precisely timed sequences of activity in recurrent circuits of the brain.

scholarly journals Anatomical and physiological foundations of cerebello-hippocampal interactions

2018 ◽  
Author(s):  
TC Watson ◽  
P Obiang ◽  
A Torres-Herraez ◽  
A Wattilliaux ◽  
P Coulon ◽  
...  
Keyword(s):  
Neural Network ◽  
Motor Control ◽  
Local Field ◽  
Dorsal Hippocampus ◽  
Spatial Navigation ◽  
Field Potential ◽  
Spatial Processing ◽  
Frequency Range ◽  
Neuronal Oscillations ◽  
Lines Of Evidence

AbstractMultiple lines of evidence suggest that functionally intact cerebello-hippocampal interactions are required for appropriate spatial processing. However, how the cerebellum anatomically and physiologically engages with the hippocampus to sustain such interactions remains unknown. Using rabies virus as retrograde transneuronal tracer, we reveal that the dorsal hippocampus receives input from topographically restricted and disparate regions of the cerebellum. By simultaneously recording local field potential from both the dorsal hippocampus and anatomically connected cerebellar regions, we additionally demonstrate that the two structures interact, in a behaviorally dynamic manner, through subregion-specific synchronization of neuronal oscillations in the 6-12Hz frequency range. Together, these results reveal a novel neural network macro-architecture through which we can understand how a brain region classically associated with motor control, the cerebellum, may influence hippocampal neuronal activity and related functions, such as spatial navigation.

scholarly journals Anatomical and physiological foundations of cerebello-hippocampal interaction

eLife ◽  
2019 ◽  
Vol 8 ◽  
Author(s):  
Thomas Charles Watson ◽  
Pauline Obiang ◽  
Arturo Torres-Herraez ◽  
Aurélie Watilliaux ◽  
Patrice Coulon ◽  
...  
Keyword(s):  
Neural Network ◽  
Motor Control ◽  
Local Field ◽  
Dorsal Hippocampus ◽  
Spatial Navigation ◽  
Field Potential ◽  
Spatial Processing ◽  
Frequency Range ◽  
Neuronal Oscillations ◽  
Lines Of Evidence

Multiple lines of evidence suggest that functionally intact cerebello-hippocampal interactions are required for appropriate spatial processing. However, how the cerebellum anatomically and physiologically engages with the hippocampus to sustain such communication remains unknown. Using rabies virus as a retrograde transneuronal tracer in mice, we reveal that the dorsal hippocampus receives input from topographically restricted and disparate regions of the cerebellum. By simultaneously recording local field potential from both the dorsal hippocampus and anatomically connected cerebellar regions, we additionally suggest that the two structures interact, in a behaviorally dynamic manner, through subregion-specific synchronization of neuronal oscillations in the 6–12 Hz frequency range. Together, these results reveal a novel neural network macro-architecture through which we can understand how a brain region classically associated with motor control, the cerebellum, may influence hippocampal neuronal activity and related functions, such as spatial navigation.

Physiologic Studies Provide New Perspectives on Early Speech Development

2010 ◽  
Vol 20 (2) ◽  
pp. 29-36
Author(s):  
Erin M. Wilson ◽  
Ignatius S. B. Nip
Keyword(s):  
Motor Control ◽  
Motor Development ◽  
Motion Tracking ◽  
Speech Development ◽  
Speech Motor Control ◽  
Therapeutic Approaches ◽  
Facial Motion ◽  
Disordered Speech ◽  
Speech Motor ◽  
Physiologic Data

Abstract Although certain speech development milestones are readily observable, the developmental course of speech motor control is largely unknown. However, recent advances in facial motion tracking systems have been used to investigate articulator movements in children and the findings from these studies are being used to further our understanding of the physiologic basis of typical and disordered speech development. Physiologic work has revealed that the emergence of speech is highly dependent on the lack of flexibility in the early oromotor system. It also has been determined that the progression of speech motor development is non-linear, a finding that has motivated researchers to investigate how variables such as oromotor control, cognition, and linguistic factors affect speech development in the form of catalysts and constraints. Physiologic data are also being used to determine if non-speech oromotor behaviors play a role in the development of speech. This improved understanding of the physiology underlying speech, as well as the factors influencing its progression, helps inform our understanding of speech motor control in children with disordered speech and provide a framework for theory-driven therapeutic approaches to treatment.

Sign in / Sign up

Export Citation Format

Share Document