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

Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

1.1K
Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
1.1K
Time and frequency -Domain Interpretation of Phase-lead Control01:24

Time and frequency -Domain Interpretation of Phase-lead Control

146
Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
146
Perceptual Constancy01:12

Perceptual Constancy

676
Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
676

You might also read

Related Articles

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

Sort by
Same author

Post-stroke flexed elbow deformity management: consensus opinion from an international Delphi expert panel.

Annals of physical and rehabilitation medicine·2026
Same author

Modality-agnostic decoding of vision and language from fMRI.

eLife·2026
Same author

The dominance of large-scale phase dynamics in human cortex, from delta to gamma.

eLife·2026
Same author

Neurophysiological Resting-State Markers of Catatonia in Schizophrenia and Mood Disorders.

Schizophrenia bulletin·2026
Same author

Traveling waves across scales: Different mechanisms but same canonical computation?

eLife·2025
Same author

Attention-induced perceptual traveling waves in binocular rivalry.

Journal of vision·2025

Related Experiment Video

Updated: Oct 4, 2025

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
07:12

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Published on: April 11, 2025

586

α Phase-Amplitude Tradeoffs Predict Visual Perception.

Camille Fakche1, Rufin VanRullen2, Philippe Marque3,4

  • 1Université de Paris, Integrative Neuroscience and Cognition Center Unité Mixte de Recherche 8002, Centre National de la Recherche Scientifique, Paris F-75006, France camille.fakche@gmail.com.

Eneuro
|February 2, 2022
PubMed
Summary

Alpha oscillations (∼10 Hz) create periodic inhibition, impacting visual perception. High alpha amplitude reduces performance at specific phases, while low amplitude maintains higher perceptual performance, supporting the pulsed inhibition theory.

Keywords:
EEGTMScortical excitabilityphase-amplitude tradeoffsvisual perceptionα oscillations

More Related Videos

Author Spotlight: Assessment of Visual Acuity in Central Vision Loss Through Motion-Based Peripheral Vision Testing
06:25

Author Spotlight: Assessment of Visual Acuity in Central Vision Loss Through Motion-Based Peripheral Vision Testing

Published on: February 23, 2024

750
An Experimental Platform to Study the Closed-loop Performance of Brain-machine Interfaces
10:51

An Experimental Platform to Study the Closed-loop Performance of Brain-machine Interfaces

Published on: March 10, 2011

13.9K

Related Experiment Videos

Last Updated: Oct 4, 2025

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
07:12

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Published on: April 11, 2025

586
Author Spotlight: Assessment of Visual Acuity in Central Vision Loss Through Motion-Based Peripheral Vision Testing
06:25

Author Spotlight: Assessment of Visual Acuity in Central Vision Loss Through Motion-Based Peripheral Vision Testing

Published on: February 23, 2024

750
An Experimental Platform to Study the Closed-loop Performance of Brain-machine Interfaces
10:51

An Experimental Platform to Study the Closed-loop Performance of Brain-machine Interfaces

Published on: March 10, 2011

13.9K

Area of Science:

  • Neuroscience
  • Cognitive Science
  • Psychophysics

Background:

  • Spontaneous alpha oscillations (∼10 Hz) are linked to cognitive functions, particularly visual perception.
  • Alpha oscillation phase and amplitude influence cortical excitability and perceptual performance.
  • The causal role of alpha phase-amplitude tradeoffs in visual perception is not fully understood.

Purpose of the Study:

  • To investigate the causal role of alpha phase-amplitude tradeoffs on visual perception.
  • To test predictions from the pulsed inhibition theory regarding alpha oscillations and perception.
  • To determine if high alpha amplitude at specific phases leads to reduced perceptual performance.

Main Methods:

  • Assessed human cortical excitability using transcranial magnetic stimulation (TMS) to induce phosphene perception.
  • Recorded post-pulse evoked activity using simultaneous electroencephalography (EEG).
  • Analyzed the modulation of phosphene perception probability by alpha phase and amplitude.

Main Results:

  • Pre-pulse alpha phase significantly modulated phosphene perception probability, especially with high alpha amplitude.
  • A non-optimal phase (between -π/2 and -π/4) for phosphene perception was identified for high alpha amplitude.
  • This non-optimal phase correlated with increased post-pulse evoked activity (event-related potential) in perceived phosphene trials.

Conclusions:

  • Alpha oscillations induce periodic inhibitory moments when alpha amplitude is high, decreasing perceptual performance.
  • These findings provide strong causal evidence supporting the pulsed inhibition theory of alpha oscillations.
  • The study elucidates the mechanism by which alpha oscillations dynamically regulate visual perception.