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Related Concept Videos

Neuronal Communication01:28

Neuronal Communication

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Neurons, the fundamental units of the brain and nervous system, communicate through complex electrochemical signals that underpin all cognitive and bodily functions. This communication is primarily facilitated by a process involving the generation and propagation of an action potential along the axon of the neuron. When the internal electrical charge of a neuron surpasses a certain threshold, an action potential is triggered. This rapid change in voltage travels swiftly along the axon to the...
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Electrical Synapses01:28

Electrical Synapses

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Electrical synapses found in all nervous systems play important and unique roles. In these synapses, the presynaptic and postsynaptic membranes are very close together (3.5 nm) and are actually physically connected by channel proteins forming gap junctions.
Gap junctions allow the current to pass directly from one cell to the next. In contrast, in the chemical synapse, the neurotransmitters carry the information through the synaptic cleft from one neuron to the next. They consist of two...
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Synaptic Signaling01:09

Synaptic Signaling

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Neurons communicate at synapses, or junctions, to excite or inhibit the activity of other neurons or target cells, such as muscles. Synapses may be chemical or electrical.
Most synapses are chemical, meaning an electrical impulse or action potential spurs the release of chemical messengers called neurotransmitters. The neuron sending the signal is called the presynaptic neuron, and the neuron receiving the signal is the postsynaptic neuron.
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The Synapse02:47

The Synapse

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Neurons communicate with one another by passing on their electrical signals to other neurons. A synapse is the location where two neurons meet to exchange signals. At the synapse, the neuron that sends the signal is called the presynaptic cell, while the neuron that receives the message is called the postsynaptic cell. Note that most neurons can be both presynaptic and postsynaptic, as they both transmit and receive information.
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Electrochemical Gradient and Channel Proteins: An Overview01:21

Electrochemical Gradient and Channel Proteins: An Overview

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An electrochemical gradient is a fundamental concept in biology and chemistry. It regulates the movement of ions across cell membranes. This movement is influenced by two factors:
The electrical gradient: The electrical gradient across cell membranes refers to the difference in electric charge between the inside and outside of a cell.  This difference drives the movement of ions towards or away from the cells. For instance, if the inside of the cell is more negatively charged relative to...
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Overview of Synapses01:25

Overview of Synapses

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A synapse is a specialized structure where two neurons connect, allowing them to pass an electrical or chemical signal to another neuron. It is the point of communication between neurons. The term "synapse" is derived from the Greek word "synapsis," which means "conjunction." The entire process of neural communication revolves around the synapse. When activated, a neuron releases chemicals known as neurotransmitters into the synapse. These neurotransmitters cross the synapse and bind to...
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Interfacing Microfluidics with Microelectrode Arrays for Studying Neuronal Communication and Axonal Signal Propagation
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Streamlining the interface between electronics and neural systems for bidirectional electrochemical communication.

Wonkyung Cho1, Sun-Heui Yoon1, Taek Dong Chung1,2

  • 1Department of Chemistry, Seoul National University Seoul 08826 Republic of Korea tdchung@snu.ac.kr.

Chemical Science
|May 8, 2023
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Summary
This summary is machine-generated.

Researchers are developing advanced neural interfaces to seamlessly connect the brain with electronic devices. These interfaces use electrochemical methods for efficient, two-way communication, mimicking the brain's natural signaling processes.

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Materials Science

Background:

  • Neural interfaces aim to bridge the gap between biological neural systems and electronic devices for enhanced signal transmission.
  • Electrochemical methods are crucial for communication, utilizing the same chemical language as neurons.
  • Current research focuses on improving the efficiency and seamlessness of neuro-electronic communication.

Purpose of the Study:

  • To explore advancements in neural interfaces for improved neuron-electrode integration.
  • To examine strategies targeting neurons and synapses for better communication.
  • To review progress in electrochemical neurosensing and iontronics-based chemical delivery.

Main Methods:

  • Investigating synaptic interfaces for direct signal exchange with neurons.
  • Utilizing hydrogel-based iontronic devices for neuromodulation.
  • Developing advanced selective neurosensing techniques.
  • Examining electrochemical methods for neural signal sensing and stimulation.

Main Results:

  • Synaptic interfaces demonstrate potential for direct, synapse-like signal exchange.
  • Iontronic chemical delivery devices show operational compatibility with neural systems.
  • Progress in selective neurosensing enhances the precision of neural signal detection.
  • Electrochemical techniques facilitate efficient communication via shared chemical language.

Conclusions:

  • Seamless neural interfaces are key to efficient neuro-electronic communication.
  • Targeting specific neural regions like synapses improves interface functionality.
  • Advances in electrochemical sensing and iontronics offer promising avenues for neuromodulation and neuroprosthetics.