Medical Systems Corp. of Greenvale, N.Y., offers its newest SIGNIFICANT SCAT-01 Ultra-Stepper, a computer-controlled microelectrode stepper system for use in neurophysiological experiments. The SCAT-01 provides movement fast enough to avoid "dimpling" in brain tissue and to penetrate many small cells. Electrical interference from the stepping motor is neg- ligible; simultaneous recording from the advancing electrode can therefore stop the electrode at an appropriate position. Common step patterns are available with included software; alternative patterns can be developed by the user with the supplied BASIC computer language. An ultrasonically coupled keypad provides remote control.

Origin, from Micro- Cal Software Inc. of Northampton, Mass., is a Windows-based technical graphics and data-analysis application. Origin has the ability to process large data sets and has a variety of publication-quality graphic output options. It also offers multiple-plot windows and can produce multiple graphs on a single page; additionally, it can perform sophisticated scientific calculations, statistics,...

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