Psychometric Research - Professional Tools for Hypnotherapy and Psychotherapy Practitioners
Free Hypnotic Spiral Software

Here are a couple of fun bits of software that show what tricks the mind is capable of.  Please note that people who suffer from epilepsy should not use this software.

Both programs run on Windows:

hypno.exe (48 KB)
optical.exe (22 KB)

Download and run, stare at the centre of the spiral for about 30 seconds, then look at the back of your hand!

Note that the first program hypno.exe runs full screen and on some systems it does not exit as it should when you press a key.  If this happens, exit the program by pressing Alt-Tab to switch back to the desktop, then right-click on the program on the taskbar (will be a black 'DOS' icon) and select Close.

More Illusions

If you like optical illusions, take a look at these websites for many more amazing illusions ..

Optical Illusions & Visual Phenomena

Akiyoshi's illusion pages

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