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The thalamus, often called “the gateway to the cerebral cortex,” is vital in processing and directing sensory and motor signals throughout the brain. Almost all inputs destined for the cerebral cortex, except for olfactory signals, are relayed through the thalamus. The thalamus is  a sophisticated relay station, channeling information from various brain regions to the cerebral cortex, as well as a filter, prioritizing certain signals over others based on current physiological...
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Many cellular signals are hydrophilic and therefore cannot pass through the plasma membrane. However, small or hydrophobic signaling molecules can cross the hydrophobic core of the plasma membrane and bind to internal, or intracellular, receptors that reside within the cell. Many mammalian steroid hormones use this mechanism of cell signaling, as does nitric oxide (NO) gas.
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Related Experiment Video

Updated: Apr 7, 2026

Whole-cell Patch-clamp Recordings from Morphologically- and Neurochemically-identified Hippocampal Interneurons
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Whole-cell Patch-clamp Recordings from Morphologically- and Neurochemically-identified Hippocampal Interneurons

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Parvalbumin Interneurons: All Forest, No Trees.

Joshua T Trachtenberg1

  • 1Department of Neurobiology, David Geffen School of Medicine at UCLA, University of California, Los Angeles, Los Angeles, CA 90095, USA.

Neuron
|July 17, 2015
PubMed
Summary

This study clarifies the function of a specific type of inhibitory neuron in brain circuits. Researchers reveal the precise role these neurons play in neural network activity.

Area of Science:

  • Neuroscience
  • Cellular Neuroscience
  • Systems Neuroscience

Background:

  • Inhibitory neurons are crucial for regulating neural circuit output.
  • Understanding the specific roles of different inhibitory neuron classes is an active area of research.

Purpose of the Study:

  • To elucidate the function of a particular class of inhibitory neurons within local brain circuits.
  • To provide a detailed account of how these inhibitory neurons shape neural network activity.

Main Methods:

  • The study by Scholl et al. (2015) investigates the function of specific inhibitory neurons.
  • Methods likely involve in vivo or in vitro electrophysiology, optogenetics, or chemogenetics to manipulate and record neuronal activity.

Main Results:

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Recording Gamma Band Oscillations in Pedunculopontine Nucleus Neurons
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  • Scholl et al. demonstrate a specific function for a class of inhibitory neurons.
  • Their findings offer new insights into the precise contribution of these cells to circuit output.

Conclusions:

  • The study significantly advances our understanding of inhibitory neuron function in the brain.
  • These findings have implications for comprehending neural computation and circuit dynamics.