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Related Concept Videos

Storage01:23

Storage

A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze each...
Understanding Memory01:19

Understanding Memory

Memory is the retention of information or experiences over time, facilitated through three main processes: encoding, storage, and retrieval. Encoding is the process of inputting information into the memory system. For instance, when listening to a lecture, watching a play, reading a book, or having a conversation, the brain is actively encoding information. This initial stage involves transforming sensory input into a form that can be processed and stored by the brain. Various factors, such as...
System of Memory01:23

System of Memory

Memory is categorized into three major systems: sensory memory, short-term memory (STM), and long-term memory (LTM). These systems differ in their capacity and the duration for which they can hold information. Sensory memory captures raw sensory input from the environment, holding it for just a few seconds or less. For example, on hearing a brief, loud sound, like a car horn honking, the sound seems to linger in the mind for a moment even after it stops. This is an instance of sensory memory...
Electrochemical Gradient and Channel Proteins: An Overview01:21

Electrochemical Gradient and Channel Proteins: An Overview

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 the...
Neural Circuits01:25

Neural Circuits

Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
Uniform Depth Channel Flow: Problem Solving01:18

Uniform Depth Channel Flow: Problem Solving

To calculate the flow rate for a trapezoidal channel, first, identify the bottom width, side slope, and flow depth of the channel. The cross-sectional area (A) corresponding to the depth of flow (y), channel bottom width (B), and side slope (θ) is determined by:Next, calculate the wetted perimeter, which includes the bottom width and the sloped side lengths in contact with the water. Using the values of the cross-sectional area and the wetted perimeter, determine the hydraulic radius by...

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Related Experiment Video

Updated: Jun 27, 2026

Assembly and Characterization of Biomolecular Memristors Consisting of Ion Channel-doped Lipid Membranes
08:07

Assembly and Characterization of Biomolecular Memristors Consisting of Ion Channel-doped Lipid Membranes

Published on: March 9, 2019

The ascent of channels with memory.

Rishikesh Narayanan1, Daniel Johnston

  • 1Center for Learning and Memory, The University of Texas at Austin, Austin, TX 78712, USA.

Neuron
|December 17, 2008
PubMed
Summary

Neuroscience research reveals that functional maps in the brain’s medial entorhinal cortex rely on ion channel differences. These conductance gradients in specific neuron types help retain spatial memory.

Area of Science:

  • Neuroscience
  • Molecular Biology
  • Computational Neuroscience

Background:

  • Neurons exhibit remarkable diversity in ion channel expression, a key factor in neural function.
  • Understanding the basis of this heterogeneity is crucial for deciphering neural computation.

Discussion:

  • Garden and colleagues identify specific ion channel conductance gradients in layer II stellate neurons.
  • These gradients are proposed to underlie the "memory" of functional maps within the medial entorhinal cortex.

Key Insights:

  • Functional maps in the medial entorhinal cortex are encoded by variations in ion channel expression.
  • Specific conductance gradients in stellate neurons contribute to the persistence of spatial information.

Outlook:

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  • Further research can explore how these gradients are established and maintained during development.
  • Investigating the role of these ion channel properties in neurological disorders may offer new therapeutic targets.