Beta-frequency sensory stimulation enhances gait rhythmicity through strengthened coupling between striatal networks and stepping movement

Sudiksha Sridhar, Eric Lowet, Howard J. Gritton, Jennifer Freire, Chengqian Zhou, Florence Liang and Xue Han ()
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Sudiksha Sridhar: Boston University
Eric Lowet: Boston University
Howard J. Gritton: Boston University
Jennifer Freire: Boston University
Chengqian Zhou: Boston University
Florence Liang: Boston University
Xue Han: Boston University

Nature Communications, 2024, vol. 15, issue 1, 1-17

Abstract: Abstract Stepping movement is delta (1–4 Hz) rhythmic and depends on sensory inputs. Stepping-related delta-rhythmic neural activity is coupled to beta (10–30 Hz) frequency dynamics that are also prominent in sensorimotor circuits. We explored how beta-frequency sensory stimulation influences stepping and dorsal striatal regulation of stepping. We delivered audiovisual stimulation at 10 or 145 Hz to mice voluntarily locomoting, while recording locomotion, cellular calcium dynamics and local field potentials (LFPs). We found that 10 Hz, but not 145 Hz stimulation prominently entrained striatal LFPs. Even though stimulation at both frequencies promoted locomotion and desynchronized striatal network, only 10 Hz stimulation enhanced the delta rhythmicity of stepping and strengthened the coupling between stepping and striatal LFP delta and beta oscillations. These results demonstrate that higher frequency sensory stimulation can modulate lower frequency striatal neural dynamics and improve stepping rhythmicity, highlighting the translational potential of non-invasive beta-frequency sensory stimulation for improving gait.

Date: 2024
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DOI: 10.1038/s41467-024-52664-0

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