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Related Experiment Videos

Mapping retinotopic structure in mouse visual cortex with optical imaging.

Sven Schuett1, Tobias Bonhoeffer, Mark Hübener

  • 1Max-Planck-Institut für Neurobiologie, D-82152 Martinsried, Germany.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|August 2, 2002
PubMed
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Optical imaging reveals precise retinotopic maps in mouse visual cortex, showing consistent organization and identifying multiple extrastriate areas. This technique aids analysis of map structure in transgenic models.

Area of Science:

  • Neuroscience
  • Visual System Research
  • Optical Imaging Techniques

Background:

  • Understanding the visual cortex's organization is crucial for neuroscience.
  • Retinotopic mapping visualizes how visual space is represented in the brain.
  • Mouse models are increasingly used to study visual system development and function.

Purpose of the Study:

  • To visualize the retinotopic organization of the mouse visual cortex using optical imaging of intrinsic signals.
  • To precisely determine the location, size, and shape of visual area 17.
  • To identify and characterize extrastriate visual areas in the mouse brain.

Main Methods:

  • Optical imaging of intrinsic signals to map visual cortex activity.
  • Electrophysiological recordings to confirm retinotopic maps.

Related Experiment Videos

  • Single-unit recordings to correlate intrinsic signals with neuronal firing rates.

    • Main Results:

    • Functionally determined area 17 matched anatomical location with low inter-animal variability.
    • Optical imaging revealed strong surround inhibition in area 17.
    • At least four extrastriate visual areas were identified through averaged maps.

    Conclusions:

    • Optical imaging is a powerful and suitable technique for visualizing retinotopic maps in mice.
    • The technique allows for detailed analysis of map structure, particularly in transgenic animals.
    • The study provides a robust method for exploring visual cortex organization and function.