Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Vision01:24

Vision

61.7K
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
61.7K
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

9.4K
The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
9.4K
Association Areas of the Cortex01:21

Association Areas of the Cortex

10.8K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
10.8K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same authorSame journal

High-Frequency Spinal Cord Stimulation Modifies Tibial Nerve-Stimulation-Evoked Cortical Theta-Gamma Coupling in Sheep Cortex.

The European journal of neuroscience·2026
Same author

Spatial frequency processing preferentially recruits distributed cortical interactions in V1.

Neuroreport·2026
Same author

Distinct Neural Mechanisms of Visual and Sound Adaptation in the Cat Visual Cortex.

The European journal of neuroscience·2025
Same author

Overlapping functional micro-organization of orientation and spatial frequency maps in the visual cortex.

Neuroreport·2025
Same author

Deep learning analysis of long COVID and vaccine impact in low- and middle-income countries (LMICs): development of a risk calculator in a multicentric study.

Frontiers in public health·2025
Same author

Neurophysiological effects of high-frequency spinal cord stimulation on cortico-sensory areas in large ovine animal model.

The journal of pain·2025

Related Experiment Video

Updated: Apr 15, 2026

Stimulus-specific Cortical Visual Evoked Potential Morphological Patterns
09:42

Stimulus-specific Cortical Visual Evoked Potential Morphological Patterns

Published on: May 12, 2019

6.5K

Stimulus-dependent augmented gamma oscillatory activity between the functionally connected cortical neurons in the

Vishal Bharmauria1, Lyes Bachatene1, Sarah Cattan1

  • 1Neurophysiology of the Visual System, Département de Sciences Biologiques, Université de Montréal, CP 6128 Succursale centre-ville, Montréal, QC, H3C 3J7, Canada.

The European Journal of Neuroscience
|April 8, 2015
PubMed
Summary

Gamma oscillations (30-80 Hz) are crucial for brain function. This study reveals that gamma power and coherence are stronger between connected neurons, suggesting intrinsic generation within neuronal assemblies.

Keywords:
coherencefunctional connectiongamma oscillationsprimary visual cortexwindow of opportunity

More Related Videos

A Large Lateral Craniotomy Procedure for Mesoscale Wide-field Optical Imaging of Brain Activity
10:05

A Large Lateral Craniotomy Procedure for Mesoscale Wide-field Optical Imaging of Brain Activity

Published on: May 7, 2017

13.0K
Laser-scanning Photostimulation of Optogenetically Targeted Forebrain Circuits
07:43

Laser-scanning Photostimulation of Optogenetically Targeted Forebrain Circuits

Published on: December 27, 2013

9.8K

Related Experiment Videos

Last Updated: Apr 15, 2026

Stimulus-specific Cortical Visual Evoked Potential Morphological Patterns
09:42

Stimulus-specific Cortical Visual Evoked Potential Morphological Patterns

Published on: May 12, 2019

6.5K
A Large Lateral Craniotomy Procedure for Mesoscale Wide-field Optical Imaging of Brain Activity
10:05

A Large Lateral Craniotomy Procedure for Mesoscale Wide-field Optical Imaging of Brain Activity

Published on: May 7, 2017

13.0K
Laser-scanning Photostimulation of Optogenetically Targeted Forebrain Circuits
07:43

Laser-scanning Photostimulation of Optogenetically Targeted Forebrain Circuits

Published on: December 27, 2013

9.8K

Area of Science:

  • Neuroscience
  • Computational Neuroscience
  • Systems Neuroscience

Background:

  • Neuronal assemblies synchronize within the gamma oscillatory band (30-80 Hz), playing a key role in information processing.
  • The precise mechanisms and origins of gamma oscillations remain largely unknown despite extensive research.

Purpose of the Study:

  • To investigate the relationship between neuronal connectivity and gamma oscillations in the primary visual cortex.
  • To elucidate the intrinsic generation mechanisms of gamma oscillations within local neuronal networks.

Main Methods:

  • Multiunit recordings were performed in the primary visual cortex of cats.
  • Analysis focused on gamma power (20-40 Hz and 60-80 Hz) and frequency coherence between functionally connected and unconnected units within neuronal assemblies.

Main Results:

  • Gamma power and frequency coherence were significantly higher between functionally connected units compared to unconnected units.
  • Higher gamma rhythms (60-80 Hz) were predominantly associated with fast-spiking neurons.
  • A '50-ms temporal window of opportunity' was identified in relation to stimulus presentation.

Conclusions:

  • Gamma oscillations appear to be intrinsically generated between connected units within microcircuits (cell assemblies).
  • Neuronal connectivity and specific neuronal types (fast-spiking neurons) are critical factors in gamma oscillation generation.
  • These findings provide new insights into the microcircuit basis of gamma oscillations and their role in sensory processing.