Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Operational Amplifiers01:17

Operational Amplifiers

2.0K
The operational amplifier, often referred to as an op-amp, is a multifaceted building block of a circuit. This electronic component functions like a voltage-controlled voltage source and can also be used to create a voltage- or current-controlled current source. The design of an operational amplifier enables it to execute mathematical operations when external components like resistors and capacitors are linked to its terminals. An op-amp has the capacity to sum signals, amplify a signal,...
2.0K
MOSFET Amplifiers01:17

MOSFET Amplifiers

557
The MOSFET, when operating in its active region, functions as a voltage-controlled current source. In this region, the gate-to-source voltage controls the drain current. This principle underlies the operation of the transconductance MOSFET amplifier. The output current is directed through a load resistor to convert this amplifier into a voltage amplifier. The output voltage is then obtained by subtracting the voltage drop across the load resistance from the supply voltage. This process results...
557
BJT Amplifiers01:14

BJT Amplifiers

1.0K
Bipolar Junction Transistors (BJTs) are pivotal components in amplifier circuits, functioning as voltage-controlled current sources in their active region. This characteristic allows them to efficiently control the collector current through variations in the base-emitter voltage. Essentially, BJTs amplify power due to their ability to take a weak input signal and output a much stronger signal.
In BJT amplifier configurations, particularly in common-emitter setups, the transistor's role...
1.0K
Instrumentation Amplifier01:25

Instrumentation Amplifier

1.1K
An electrocardiography (ECG) machine is an essential piece of medical equipment used to monitor the electrical activity of the heart. It operates by detecting small electrical changes on the skin that result from the depolarization of the heart muscle during each heartbeat. However, these signals are in the microvolt range and can be easily overwhelmed by noise or interference.
To overcome this challenge, an ECG machine utilizes an instrumentation amplifier. This specialized amplifier is...
1.1K
Amplifying Signals via Second Messengers01:15

Amplifying Signals via Second Messengers

8.8K
Many receptor binding ligands are hydrophilic; they do not cross the cell membrane but bind to cell-surface receptors. Thus, their message must be relayed by second messengers present in the cell cytoplasm. There are several second messenger pathways, each with its own way of relaying information. For example, the G protein-coupled receptors can activate both phosphoinositol and cyclic AMP (cAMP) second messenger pathways. The phosphoinositol pathway is active when the receptor induces...
8.8K
Problem-Solving: Tuning of a Guitar String01:04

Problem-Solving: Tuning of a Guitar String

1.1K
In the case of stringed instruments like the guitar, the elastic property that determines the speed of the sound produced is its linear mass density or the mass per unit length. This is simply called the linear density. If the string's linear density is constant along the string, then the linear density is simply the total mass divided by the total length.
The string's wave speed can be regulated by varying the linear density. Tension is the other property that determines the speed of...
1.1K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Entropy transfer from solar radio bursts to energetic particles.

Science advances·2025
Same author

Kolmogorov modes and linear response of jump-diffusion models.

Reports on progress in physics. Physical Society (Great Britain)·2025
Same author

Mechanics of blunting of actin-myosin interaction dynamics by the actinopathy-causing mutation E334Q in cytoskeletal γ-actin.

The Journal of physiology·2025
Same author

Resolving the kinetics of an ensemble of muscle myosin motors via a temperature-dependent fitting procedure.

Journal of the Royal Society, Interface·2025
Same author

Learning in Wilson-Cowan Model for Metapopulation.

Neural computation·2025
Same author

Application limits of the scaling relations for Monte Carlo simulations in diffuse optics. Part 2: results.

Optics express·2024
Same journal

Erratum: Low-dimensional model for adaptive networks of spiking neurons [Phys. Rev. E 111, 014422 (2025)].

Physical review. E·2026
Same journal

Disentangling the effects of many-body forces on depletion interactions.

Physical review. E·2026
Same journal

Charge transport and mode transition in dual-energy electron beam diodes.

Physical review. E·2026
Same journal

Optimization of multisite reactions in complex compartmentalized media.

Physical review. E·2026
Same journal

Origin of geometric cohesion in nonconvex granular materials: Interplay between interdigitation and rotational constraints enhancing frictional stability.

Physical review. E·2026
Same journal

Interaction of walkers with a standing Faraday wave.

Physical review. E·2026
See all related articles

Related Experiment Video

Updated: Feb 15, 2026

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores
09:43

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores

Published on: October 31, 2013

14.2K

Noise-driven neuromorphic tuned amplifier.

Duccio Fanelli1,2, Francesco Ginelli3, Roberto Livi1,2

  • 1Dipartimento di Fisica e Astronomia and CSDC, Università degli Studi di Firenze, via G. Sansone 1, 50019 Sesto Fiorentino, Italy.

Physical Review. E
|January 20, 2018
PubMed
Summary
This summary is machine-generated.

This study introduces a tunable amplifier model for neuronal interactions. It uses noise to generate tunable frequency oscillations, potentially enhancing signal processing in the brain.

More Related Videos

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
10:17

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

Published on: July 12, 2017

12.0K
Light-driven Enzymatic Decarboxylation
09:58

Light-driven Enzymatic Decarboxylation

Published on: May 22, 2016

12.3K

Related Experiment Videos

Last Updated: Feb 15, 2026

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores
09:43

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores

Published on: October 31, 2013

14.2K
20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
10:17

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

Published on: July 12, 2017

12.0K
Light-driven Enzymatic Decarboxylation
09:58

Light-driven Enzymatic Decarboxylation

Published on: May 22, 2016

12.3K

Area of Science:

  • Computational Neuroscience
  • Complex Systems

Background:

  • Neuronal interactions involve excitatory and inhibitory processes.
  • Synaptic activation modulates signal transmission.
  • Stochastic models are used to understand biological systems.

Purpose of the Study:

  • To investigate a simple stochastic model of neuronal excitatory and inhibitory interactions.
  • To demonstrate the system's behavior as a tunable amplifier.
  • To explore the potential applications in signal enhancement and biological pacemaking.

Main Methods:

  • Definition of a model on a directed lattice.
  • Modulation of internode couplings via a nonlinear function mimicking synaptic activation.
  • Analysis of noise-induced amplification and oscillation generation.

Main Results:

  • The system functions as a fully tunable amplifier.
  • Endogenous noise from finite size effects drives coherent, exponential amplification.
  • Giant oscillations with tunable frequencies are generated.
  • The system operates as an out-of-equilibrium thermal machine.

Conclusions:

  • The brain could utilize this amplification process for signal enhancement and encoding.
  • The amplification mechanism offers a potential pacemaking mechanism for biological systems.
  • The model demonstrates energy extraction from a finite bath under non-equilibrium conditions.