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 Experiment Videos

Stability of phase recognition in complex spatial waveforms.

M A Georgeson, R S Turner

    Vision Research
    |January 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Related Concept Videos

    You might also read

    Related Articles

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

    Sort by
    Same author

    Subthalamic nucleus neurons encode syllable sequence and phonetic characteristics during speech.

    Journal of neurophysiology·2024
    Same author

    The AlzMatch Pilot Study - Feasibility of Remote Blood Collection of Plasma Biomarkers for Preclinical Alzheimer's Disease Trials.

    The journal of prevention of Alzheimer's disease·2024
    Same author

    Articulatory Gain Predicts Motor Cortex and Subthalamic Nucleus Activity During Speech.

    Cerebral cortex (New York, N.Y. : 1991)·2021
    Same author

    Simultaneously recorded subthalamic and cortical LFPs reveal different lexicality effects during reading aloud.

    Journal of neurolinguistics·2021
    Same author

    Carbon dioxide assimilation and growth of red spruce (Picea rubens Sarg.) seedlings in response to ozone, precipitation chemistry, and soil type.

    Oecologia·2017
    Same author

    Nilotinib and bosutinib modulate pre-plaque alterations of blood immune markers and neuro-inflammation in Alzheimer's disease models.

    Neuroscience·2015
    Same journal

    Editorial for VSI Amblyopia: Advances in Amblyopia Research.

    Vision research·2026
    Same journal

    Computational and mathematical models in vision: Quantitative approaches to understanding visual perception.

    Vision research·2026
    Same journal

    Complex interactions between lightness, chroma, and hue in color ensemble perception.

    Vision research·2026
    Same journal

    Driving with autism spectrum disorder: Exploring the impact of tactile hazard warnings on gaze behavior and hazard responses.

    Vision research·2026
    Same journal

    Early visual processing in adults with ADHD: evidence from contrast sensitivity, spatial integration, and external noise.

    Vision research·2026
    Same journal

    Pupil reflexes generate the peripheral drift illusion due to ON/OFF motion responses.

    Vision research·2026
    See all related articles

    Afterimages significantly alter waveform perception, shifting visual phase relations. Stable phase recognition in complex gratings requires eliminating these predictable afterimage effects.

    Area of Science:

    • Visual perception
    • Psychophysics
    • Neuroscience

    Background:

    • Complex visual stimuli are composed of multiple harmonic components.
    • Understanding phase relations is crucial for accurate waveform perception.

    Purpose of the Study:

    • To investigate the influence of negative afterimages on the perception of phase relations in complex gratings.
    • To determine if afterimages cause misperceptions like the square-wave illusion.

    Main Methods:

    • Observers viewed brief (200 msec) presentations of gratings with fundamental and third harmonic components.
    • The phase of the third harmonic and grating position varied randomly.
    • Inspection periods with gratings or their fundamental preceded test presentations.

    Related Experiment Videos

    Main Results:

    • Phase relation classification was highly accurate (99%).
    • Afterimages induced strong shifts in perceived waveform, dependent on relative position.
    • The square-wave illusion occurred only with present afterimages (real or simulated).

    Conclusions:

    • Negative afterimages significantly impact perceived waveform and phase relations.
    • Phase recognition is stable when predictable afterimage variations are removed.
    • Afterimages play a critical role in visual illusions like the square-wave illusion.