wallach Rings

Photo on left from Swarthmore College where there is a Fellowship named in honor of Hans Wallach.

The photo on the right is by photographer not identified - Original publication: Annual Review of Psychology (www.annualreviews.org)Immediate source: scanned, Fair use, Hans Wallach’s Wiki page is very informative.

Hans Wallach was an experimental psychologist whose work in perception was ground breaking in many ways. In particular, his work on the kinetic depth effect and adaptation in the perception of depth and distance yielded some very interesting stimuli which we put to use heavily in VT. Though these stimuli may be used in many different ways, we use them to help our patients get a grasp on helping them take control of how they see. These patterns are ambiguous targets, which trigger several potential perceptual interpretations. By shifting from one to another under volitional control, rather than them just changing on their own or by accident, our patients are learning a great lesson which sets the stage for them to be in control. Another key element here is being able to move along the Z-axis and see depth through each channel (eye-brain connection) to similar degrees in either interpretation of the ambiguous figures.

Each of the videos below run just over a minute and can be viewed directly on a computer screen or projected.

trilevel wallach rings for vt

This is the three-level Wallach ring sometimes called a sombrero. This is often used as the first step in the Wallach ring training. It can be viewed directly on a computer screen or projected on a large screen. It can be used for in-office or home VT.

This is the multilevel Wallach Ring moving in a clockwise direction.

This is the multilevel Wallach Ring moving in a counter clockwise direction.

Reversible or ambiguous images may also be used to work on intentional control. Wiki Page with many examples.

Intentional Control - The Lesson

Article on the intentional control of reversible figure perception.

full field wallach ring for vt

This is one of the Wallach Rings which covers the full screen. This can be viewed directly or projected to be used with your office-centered or home VT. The upper one turns counter-clockwise and the lower one turns clockwise.

Some write ups to support your office-based and home activities.

Watch this space

the bat or umbrella wallach ring for vt

Here is the Wallach Ring disk that some call the bat or the umbrella. This can be used for office-centered or home VT and may be viewed directly or projected.

Here is the two level Wallach Ring in red and green.

Small Wallach Ring inside of a Plateau Spiral.

To order from Bernell: