Low-intensity Stimulation
Low-intensity Stimulation - Related Videos
11:02
Combining Transcranial Magnetic Stimulation and fMRI to Examine the Default Mode Network
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Cited by 17 •
2010
In this article, we examine the methodology and considerations relevant to the combination of TMS and fMRI to examine the effects of brain stimulation on the default network.
12:09
Stimulating the Lip Motor Cortex with Transcranial Magnetic Stimulation
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Cited by 29 •
2014
Transcranial magnetic stimulation (TMS) has proven to be a useful tool in investigating the role of the articulatory motor cortex in speech perception. This article describes how to record motor evoked potentials (MEPs) from the lip muscles and how to disrupt the motor lip representation using repetitive TMS.
08:51
Induction of Adhesion-dependent Signals Using Low-intensity Ultrasound
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Cited by 13 •
2012
This protocol describes the stimulation of cultured fibroblasts with low-intensity pulsed ultrasound, which drives focal adhesion formation and Rac1 activation by mimicking engagement of the transmembrane matrix receptor, syndecan-4. This approach allows investigation of a successful clinical technique at the cellular level, thereby providing opportunities for refinement of the therapy.
00:58
Sound Intensity
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2023
The loudness of a sound source is related to how energetically the source is vibrating, consequently making the molecules of the propagation medium vibrate. To measure the loudness of a source, the physical quantity of interest is the intensity. This is defined as the energy emitted per unit of time per unit of area perpendicular to the sound wave's propagation direction. Since the total energy is greater if the source vibrates for a longer duration and over a larger area, dividing the emitted...
00:53
Sound Intensity Level
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2023
Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources. The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and hence a...
FAQs
Its signals can modify membrane excitability, synaptic transmission, or broader network activity, changing how neurons respond to inputs that arise within the nervous system. This distinction allows researchers to examine shifts in neural responsiveness rather than only observing direct activation. The resulting effects depend on how the physical signal interacts with ongoing circuit activity.
Electrical, magnetic, acoustic, and other physical signals can influence neural systems through different biological processes. Consequently, the selected modality and its carefully controlled protocol shape whether investigators examine membrane responses, synaptic effects, network behavior, or changes associated with plasticity. Controlling these features helps separate stimulation-related effects from normal variation in neural activity.
Weak signals generally influence how neurons respond to endogenous inputs rather than acting independently of ongoing activity. This makes the relationship between stimulation and the existing state of a circuit important for interpreting results. In neuroscience experiments, that interaction can reveal how circuit function and sensory processing depend on the responsiveness of neurons within active networks.
A study typically selects a physical stimulation modality, establishes a controlled protocol, applies the signal to the neural system, and measures resulting brain activity or behavior. Researchers then compare the observed response with the experimental condition and interpret changes in circuit function, sensory processing, plasticity, or behavior. The exact workflow varies with the scientific question and modality.
Measurements of brain activity can indicate whether stimulation altered neural responses or network-level activity, while behavioral measurements can show consequences for sensory processing or other responses. Combining these outcomes helps connect physiological changes with function. Such observations also clarify possible mechanisms and support the design of more targeted stimulation applications.
Researchers may study it when they want to modify abnormal neural activity without directly damaging brain tissue. Controlled protocols and accompanying brain-activity measurements help evaluate whether stimulation produces a useful, targeted change and clarify how it works. This research contributes to the development of noninvasive approaches for neurological and psychiatric disorders, while supporting assessment of safety.