Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Videos

Exposure-time and spatial-frequency effects in the tilt illusion.

|January 1, 1979

Summary

The visual tilt illusion changes with exposure duration, suggesting distinct inhibition and disinhibition timings in visual processing channels. These orientation interactions depend on spatial frequency and exposure time.

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

Intergenerational transmission of post-traumatic stress disorder in Australian Vietnam veterans' families.

Acta psychiatrica Scandinavica·2016

Same author

Cancer incidence in patients with schizophrenia and their first-degree relatives - a meta-analysis.

Acta psychiatrica Scandinavica·2008

Same author

Communication across the divide. A trial of structured communication between general practice and emergency departments.

Australian family physician·2002

Same author

Medical-care costs associated with posttraumatic stress disorder in Vietnam veterans.

The Australian and New Zealand journal of psychiatry·2000

Same author

The First Australian Schizophrenia Prevention Conference.

The Australian and New Zealand journal of psychiatry·2000

Same author

Screening for low prevalence disorders.

The Australian and New Zealand journal of psychiatry·2000

Area of Science:

Visual perception
Neuroscience
Computational vision

Background:

The tilt illusion demonstrates how visual context influences orientation perception.
Orientation interactions are often attributed to inhibitory and disinhibitory processes within the visual system.

Purpose of the Study:

To investigate the temporal dynamics of the tilt illusion.
To determine how exposure duration and spatial frequency affect orientation interactions.

Main Methods:

Varying exposure durations for a vertical test line and a tilted inducing grating.
Analyzing changes in the perceived tilt of the test line.
Testing different spatial frequencies of the inducing grating (2.71, 10, and 10.91 cycles per degree).

Main Results:

Significant direct (acute-angle expansion) and indirect (acute-angle contraction) effects were observed.
The timing of these effects correlated with inhibition time courses at 10 cycles/degree.
Different spatial frequencies and exposure durations (10 ms vs. 1000 ms) yielded significant effects, indicating frequency-dependent temporal processing.

Conclusions:

Orientation interactions, involving inhibition and disinhibition, appear to operate in both sustained and transient visual channels.
These channels exhibit different time constants, influencing the observed tilt illusion dynamics.
The findings provide insights into the temporal characteristics of neural processing underlying visual orientation perception.

Related Experiment Videos