Source 1primary paper2025MED
Toolkit/electromyography
electromyography
Also known as: EMG
Taxonomy: Technique Branch / Method. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
Electromyography (EMG) recordings are utilized to analyze the effects of temporal interference (TI) ultrasound and single-frequency ultrasound stimulation on contralateral limb movements in mice.
Usefulness & Problems
Why this is useful
EMG is used here to record and analyze contralateral limb movements during ultrasound stimulation of the mouse motor cortex.; measuring contralateral limb motor responses in mice; comparing stimulation conditions during tFUS experiments; Electromyography is used to quantify forelimb muscle activity and cortical influence on muscles during different behaviors.; quantifying forelimb muscle influence during behavior
Source:
EMG is used here to record and analyze contralateral limb movements during ultrasound stimulation of the mouse motor cortex.
Source:
measuring contralateral limb motor responses in mice
Source:
comparing stimulation conditions during tFUS experiments
Source:
Electromyography is used to quantify forelimb muscle activity and cortical influence on muscles during different behaviors.
Source:
quantifying forelimb muscle influence during behavior
Problem solved
It provides an experimental readout for whether ultrasound stimulation elicits motor responses.; providing a readout for motor responses evoked by ultrasound stimulation; It provides a readout of muscle-level consequences of cortical interactions and perturbations.; linking cortical activity or perturbation to muscle output
Source:
It provides an experimental readout for whether ultrasound stimulation elicits motor responses.
Source:
providing a readout for motor responses evoked by ultrasound stimulation
Source:
It provides a readout of muscle-level consequences of cortical interactions and perturbations.
Source:
linking cortical activity or perturbation to muscle output
Problem links
linking cortical activity or perturbation to muscle output
LiteratureIt provides a readout of muscle-level consequences of cortical interactions and perturbations.
Source:
It provides a readout of muscle-level consequences of cortical interactions and perturbations.
providing a readout for motor responses evoked by ultrasound stimulation
LiteratureIt provides an experimental readout for whether ultrasound stimulation elicits motor responses.
Source:
It provides an experimental readout for whether ultrasound stimulation elicits motor responses.
Published Workflows
Objective: Quantify how interactions between mouse forelimb premotor and primary motor cortical regions and their influence on muscles differ across reaching and climbing behaviors.
Why it works: The workflow combines causal perturbation with simultaneous neural and muscle readouts across two behaviors, allowing the authors to compare direction and timing of influence between cortical regions and muscles in different behavioral contexts.
behavior-dependent reorganization of hierarchical interactions between RFA and CFAshort-latency inter-regional influence on excitatory and inhibitory populationsoptogenetic inactivationNeuropixels recordingelectromyography
Objective: Evaluate whether temporal interference transcranial focused ultrasound combined with microbubbles improves mouse motor cortex stimulation efficiency and motor-response success, and investigate a possible microbubble-pressure mechanism.
Why it works: The abstract links the workflow to two complementary evidence streams: in vivo EMG-based motor-response testing and numerical simulation of microbubble dynamics. The proposed rationale is that temporal interference ultrasound with microbubbles generates higher scattered pressures, which may enhance neuronal activity and improve stimulation efficiency.
microbubble-amplified mechanical effects of ultrasoundlowered cavitation thresholds with temporal interference ultrasound excitationhigher scattered pressures exerted by microbubbles on neuronsmotor cortex tFUS stimulationEMG-based motor-response analysisnumerical simulation of microbubble dynamics
Stages
- 1.In vivo comparative motor-response testing(functional_characterization)
This stage establishes whether the stimulation conditions produce contralateral limb motor responses in vivo.
Selection: Comparison of motor responses under temporal interference ultrasound versus single-frequency ultrasound in normal and microbubble-injected mice using EMG readout.
- 2.Mechanistic microbubble dynamics simulation(secondary_characterization)
This stage provides a possible mechanistic explanation for the observed enhancement in motor responses.
Selection: Numerical calculation of scattered pressure exerted by microbubbles on neurons using a hybrid GAZ and nonlinear lipid membrane model.
Steps
- 1.Apply tFUS to the mouse motor cortex in normal and microbubble-injected micestimulation modality under test
Expose the motor cortex to the compared ultrasound conditions in vivo.
Stimulation must be applied before motor responses can be measured.
- 2.Record EMG to analyze contralateral limb movements under TI and single-frequency ultrasound conditionsreadout assay and tested stimulation condition
Measure functional motor responses elicited by the stimulation conditions.
EMG analysis follows stimulation so the study can quantify contralateral limb responses and compare conditions.
- 3.Develop a hybrid GAZ and nonlinear lipid membrane model for microbubble dynamicsmechanistic computation method
Create a model capable of representing microbubble dynamics relevant to the stimulation context.
A mechanistic model is needed before scattered pressures on neurons can be numerically calculated.
- 4.Perform numerical simulations to calculate scattered pressure exerted by microbubbles on neuronsmechanistic analysis method
Estimate a pressure-based mechanism that could explain enhanced neuronal activity and motor responses.
Simulation follows model development so the study can generate mechanistic outputs from the constructed framework.
Taxonomy & Function
Primary hierarchy
Technique Branch
Method: A concrete measurement method used to characterize an engineered system.
Mechanisms
electrical recording of muscle activityfunctional phenotyping of stimulation-evoked motor outputTechniques
Functional AssayTarget processes
No target processes tagged yet.
Implementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationoperating role: sensor
The assay requires EMG recording in mice during the stimulation experiment.; requires EMG recording during mouse stimulation experiments; The method requires EMG recording from forelimb muscles during mouse behavioral performance.; requires muscle recording during behavioral tasks
The abstract does not indicate that EMG alone resolves the underlying microbubble or neuronal mechanism.; abstract supports EMG only as a motor-response readout, not as a direct neuronal mechanism assay
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
Electromyography recordings were used to analyze the effects of temporal interference ultrasound and single-frequency ultrasound stimulation on contralateral limb movements in mice.
Electromyography (EMG) recordings are utilized to analyze the effects of temporal interference (TI) ultrasound and single-frequency ultrasound stimulation on contralateral limb movements in mice.
Temporal interference ultrasound combined with microbubbles enhanced neuronal activity in the central nervous system.
The results demonstrated that temporal interference ultrasound combined with MBs could enhance neuronal activity in the Central Nervous System, enabling a highly specific method to increase the efficiency of tFUS stimulation.
A potential mechanism for the enhanced effect of temporal interference ultrasound combined with microbubbles is generation of higher scattered pressures.
The potential mechanism could be temporal interference ultrasound combined with MBs generate higher scattered pressures.
The study developed a hybrid Gilmore-Akulichev-Zener model with nonlinear lipid membrane dynamics to simulate microbubble dynamics and calculate scattered pressure on neurons.
A hybrid model integrating the Gilmore-Akulichev-Zener (GAZ) model with nonlinear lipid membrane dynamics is developed, and numerical simulations of microbubble (MB) dynamics are performed to calculate the scattered pressure exerted by MBs on neurons.
Temporal interference ultrasound combined with microbubbles increased the success rate of motor responses in mice.
The study demonstrated that temporal interference ultrasound combined with MBs could increase the success rate of motor responses.
Approval Evidence
2 sources1 linked approval claimfirst-pass slug electromyography
we combined optogenetic inactivation, Neuropixels recording, and electromyography
Source:
Electromyography (EMG) recordings are utilized to analyze the effects of temporal interference (TI) ultrasound and single-frequency ultrasound stimulation on contralateral limb movements in mice.
Source:
assay usageneutral
Electromyography recordings were used to analyze the effects of temporal interference ultrasound and single-frequency ultrasound stimulation on contralateral limb movements in mice.
Electromyography (EMG) recordings are utilized to analyze the effects of temporal interference (TI) ultrasound and single-frequency ultrasound stimulation on contralateral limb movements in mice.
Source:
Comparisons
Source-stated alternatives
The abstract does not name an alternative motor-response assay, but it does pair EMG with numerical modeling as a separate mechanistic analysis stream.; The abstract presents EMG as complementary to cortical recording and optogenetic inactivation rather than as a replacement for them.
Source:
The abstract does not name an alternative motor-response assay, but it does pair EMG with numerical modeling as a separate mechanistic analysis stream.
Source:
The abstract presents EMG as complementary to cortical recording and optogenetic inactivation rather than as a replacement for them.
Source-backed strengths
used directly to analyze effects on contralateral limb movements; directly measures forelimb muscle activity during reaching and climbing
Source:
used directly to analyze effects on contralateral limb movements
Source:
directly measures forelimb muscle activity during reaching and climbing
Compared with optogenetic
The abstract presents EMG as complementary to cortical recording and optogenetic inactivation rather than as a replacement for them.
Shared frame: source-stated alternative in extracted literature
Strengths here: used directly to analyze effects on contralateral limb movements; directly measures forelimb muscle activity during reaching and climbing.
Relative tradeoffs: abstract supports EMG only as a motor-response readout, not as a direct neuronal mechanism assay.
Source:
The abstract presents EMG as complementary to cortical recording and optogenetic inactivation rather than as a replacement for them.
Compared with PAIR
The abstract does not name an alternative motor-response assay, but it does pair EMG with numerical modeling as a separate mechanistic analysis stream.
Shared frame: source-stated alternative in extracted literature
Strengths here: used directly to analyze effects on contralateral limb movements; directly measures forelimb muscle activity during reaching and climbing.
Relative tradeoffs: abstract supports EMG only as a motor-response readout, not as a direct neuronal mechanism assay.
Source:
The abstract does not name an alternative motor-response assay, but it does pair EMG with numerical modeling as a separate mechanistic analysis stream.
Ranked Citations
- 1.