YOGYAKARTA - Have you ever wondered how the body works that can respond as fast as a flash? The answer lies in the mechanism for sending neural pulses.
This mechanism is a fundamental process that allows the brain and nervous system to transmit electrical and chemical signals throughout the body. The transmission speed of this signal is vital for every movement, response to the senses, and process of thinking.
Sourced from the Psychology Town and CK-12 Foundation pages, the article will dissect in detail how signals move through neurons, across synapses, to trigger a final response.
Neural pulse is basically an electrical signal that propagates along neurons (neural cells), and allows communication within the nervous system. This signal is generated when there is a disturbance in the balance of the electric charge inside and outside the neuron.
This electric signal, often called the "potential of action," is the basis for how the nervous system quickly transmits information across a large distance, ensuring everything, from muscle movements to sensory perceptions, is efficiently processed.
Impuls is a means of transmitting information to the entire nervous system. Whether it's a simple reflex, such as pulling your hand from a hot object, or thinking complex, nerve pulses are involved. Functioning properly these impulses are essential for survival.
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Imagine your body as a complex power cable network. So that you can move, think, or feel, electric signals must move quickly from one end of the cable (neural cell) to the next end of the cable. This process is called a neural transmission mechanism.
Electric signals (neuron pulses) move very fast along one nerve cell (neuron). However, problems arise when the signal has to jump into the next nerve cell. These two nerve cells do not come into contact and there is a small gap between them.
This meeting point or intersection is called Sinaps. Sinaps is a communication bridge that ensures that the neural message is accurately and selectively continued. There are two types of synapses, namely:
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Similar to attached cables, it allows ions (electric particles) to flow directly from one cell to another. The transmission is very fast and is used for simultaneous coordination.
Both cells are separated by synapses gaps. The electric signal must be converted into a chemical message (Neurotransmitter) to cross.
The key mechanism for chemical synapses is when the electric signal (impuls) arrives at the end of the sender's cell (terminal axon), it triggers a bag (vesicle) containing a Neurotransmitter (for example, Dopamine) to be released into the synapse gap.
This neurotransmitter then swims across the gap and binds the receptor (such as the lock and key) in the receiving cell. This binding opens the ion channel, creates a new electric signal in the receiving cell, and the transmission continues.
Neurotransmitter also determines the effect of messages, namely:
Simply put, neural transmission is a process in which electric pulses are converted into chemical messages in synapses (Neurotransmitters) to cross gaps and converted back into electric signals in recipient cells.
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