neural impulse
Học thuậtThân thiện
Definition
- Noun:
- The electrical signal that travels along a nerve cell: A "neural impulse" is the fundamental electrochemical signal by which neurons (nerve cells) communicate. It is a rapid, temporary change in the electrical potential across a neuron's membrane that moves from one end of the cell to the other.
Usage
- The term "neural impulse" is used in scientific and medical contexts, particularly in neuroscience, biology, and psychology, to describe the basic unit of communication in the nervous system.
- It is a countable noun. You can have a single impulse or multiple impulses.
Examples
- Noun:
- The strength of a stimulus is coded by the frequency of neural impulses.
- A neural impulse travels from the sensory receptor to the spinal cord in a fraction of a second.
- Researchers measured the neural impulses generated in response to the visual cue.
Advanced Usage
- "Transmission of neural impulses": This phrase describes the process of these signals being sent and received between neurons.
- Neurotransmitters are chemicals that facilitate the transmission of neural impulses across a synapse.
- "To generate/fire a neural impulse": This describes the initiation of the signal.
- When the neuron's threshold is reached, it will fire a neural impulse.
Variants and Related Words
- Nerve impulse: A direct synonym; the terms are often used interchangeably.
- The nerve impulse propagated down the axon.
- Action potential: A more specific technical term for the same event, focusing on the precise electrical characteristics.
- The graph shows the phases of an action potential.
- Spike (informal in neuroscience): Sometimes used colloquially to refer to a single neural impulse.
- The recording showed a spike of activity.
Synonyms
- Nerve impulse
- Action potential (technical synonym)
- Electrical signal (in a neural context)
Related Phrases
- Neural transmission: The overall process of sending signals through the nervous system.
- The drug affects the speed of neural transmission.
- Neural pathway: The route followed by a series of neural impulses.
- Repeated practice strengthens the neural pathway for that skill.
Noun
- the electrical discharge that travels along a nerve fiber
- they demonstrated the transmission of impulses from the cortex to the hypothalamus