The STMEPM Programmable Stimulation System for E-Prime allows a user to interface the STMISOL Stimulator with E-Prime to control the stimulus frequency and stimulus intensity for real-time stimulus delivery changes based on a subject's responses. It is also possible to hardcode the stimulus intensity levels in the presentation so that predefined stimulus levels are delivered during the E-Prime presentation.
The system includes
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STMISOL Constant Current and Constant Voltage Linear Isolated Stimulator
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USB 4-ch D/A Unit
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Software Utility (STMISOL<--> E-Prime) with sample E-Prime experiment
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Interface cables
The
sample E-Prime experiment provides the necessary interface commands to communicate with the D/A unit. The D/A unit provides the STMISOL with the appropriate voltage levels to stimulate a subject. The system supports up to four STMISOL (and includes one).
MRI Compatibility
STMEPM should
not be used in an MRI and is not for use in stimulating subjects who are to be placed in an MRI.
A largely equivalent replacement for MRI permits the same basic functionality as STMEPM, but is not subject to the same possible errant stimulation issues if a suitable patch panel filtering structure is not constructed. This substitute setup is restricted in terms of pulse width (2 ms max) and only voltage controlled voltage stimulation is possible. However, this substitute setup can generate stimulation of differing intensity under E-Prime control.
To use this TYPE of system for MRI applications, the following stimulation structure is recommended to be intrinisically safe, despite possible errors in user recording setup:
Replace the STMISOLand its power supply with
Isolated Power Supply IPS100C
Stimulator Module STM100C
Stimulus Isolation Adapter STMISOC
Connection cable CBL100
Isolated Power Supply IPS100C
Stimulator Module STM100C
Stimulus Isolation Adapter STMISOC
Connection cable CBL100
)
