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Related Concept Videos

Neuroplasticity01:01

Neuroplasticity

Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
Neurons as Communicators of the Brain01:22

Neurons as Communicators of the Brain

Neurons, the fundamental units of the brain and nervous system, function as the primary transmitters of information throughout the body. Their ability to communicate through electrical and chemical signals is vital for every bodily function, from regulating the heartbeat to processing complex thoughts. Each neuron has three main components: the cell body (soma), dendrites, and an axon, each specialized to facilitate swift and efficient neural communication.
Cell Body
The cell body, also known...
Neurons: The Axon01:21

Neurons: The Axon

Axons are long, cytoplasmic processes of nerve cells capable of propagating electrical impulses known as action potentials. The cytoplasm or axoplasm of an axon contains neurofibrils, neurotubules, small vesicles, lysosomes, mitochondria, and various enzymes, all encased within the axolemma, the plasma membrane of the axon.
The axon attaches to the cell body at a cone-shaped elevation called the axon hillock. The initial part of the axon, closest to the hillock, is known as the initial segment.
Nervous Tissue: Glial Cells01:31

Nervous Tissue: Glial Cells

Glia, or neuroglia, are vital support cells that assist neurons in their functions. The term "glia" originates from the Greek word for "glue," reflecting their role in holding the nervous system together. These cells can be categorized into six types: four in the central nervous system (CNS) and two in the peripheral nervous system (PNS).
The CNS glial cell includes the astrocytes, the oligodendrocytes, the microglia, and the ependymal cells.
Astrocytes are star-shaped glial cells that interact...
Nervous Tissue: Neuron Types01:19

Nervous Tissue: Neuron Types

Neurons, the fundamental units of the nervous system, can be classified based on both their structural and functional characteristics.
Structurally, neurons are categorized into three main types: multipolar, bipolar, and unipolar (or pseudounipolar). Multipolar neurons, which are the most common type in the brain and spinal cord, as well as all motor neurons, possess multiple dendrites and a single axon.
Bipolar neurons, on the other hand, have one primary dendrite and one axon. They are...
Spinal Cord: Information Processing01:10

Spinal Cord: Information Processing

The spinal cord is an integral hub for motor and sensory information that enables the brain to communicate with the peripheral nervous system (PNS). This communication consists of relaying sensory data and transmission of motor commands.
Sensory Information Processing
Sensory information processing begins at the sensory receptors located in the skin and other tissues, which detect somatic sensory stimuli such as touch, temperature, or pain. These receptors function as catalysts, initiating...

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Updated: May 11, 2026

Aplysia Ganglia Preparation for Electrophysiological and Molecular Analyses of Single Neurons
09:11

Aplysia Ganglia Preparation for Electrophysiological and Molecular Analyses of Single Neurons

Published on: January 13, 2014

Limber neurons for a nimble mind.

Earl K Miller1, Stefano Fusi

  • 1The Picower Institute for Learning & Memory and Department of Brain & Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. ekmiller@mit.edu

Neuron
|April 30, 2013
PubMed
Summary
This summary is machine-generated.

Cortical neurons adapt to task demands, forming patterns that mirror changing mental states. These adaptive neurons are key to complex and flexible cognitive behaviors.

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Computational Neuroscience

Background:

  • Cortical neurons exhibit plasticity, altering their properties in response to external stimuli.
  • Understanding how neural activity represents dynamic cognitive states is a central challenge in neuroscience.

Discussion:

  • Stokes et al. (2013) show that adaptive cortical neurons form task-specific patterns.
  • These neural patterns reflect the shifting mental states required for task execution.
  • This suggests a mechanism for how the brain flexibly adapts to changing cognitive demands.

Key Insights:

  • Adaptive neurons dynamically adjust their response properties based on task requirements.
  • The patterns formed by these neurons encode evolving cognitive states.
  • This neural adaptability is crucial for cognitive flexibility and behavioral complexity.

Outlook:

  • Further research can explore the precise mechanisms of neuronal adaptation.
  • Investigating how these adaptive patterns contribute to learning and decision-making is warranted.
  • This work opens new avenues for understanding the neural basis of higher cognitive functions.