Stimulators
- - April 29, 2013
WPI offers a range of isolators and stimulators. Use the chart below to find the components that are compatible.
Isolators Features Input Output Compatible Stimulators DLS100 Biphasic, Digital Analog Modeling Digital from DS8000 0-100V
1μA - 10mAA320 SIU/Built-in stimulator TTL 0-100V
1μA - 10mAA310 A365
Mono/Biphasic TTL ±100V
1μA - 10mAA310 A385
High Current TTL ±36V
10μA - 100mAA310 A395
Analog Analog ±10V ±70V
1μA - 10mAA310 Duo773 Intracellular Amplifier Analog 0-1V ±500nA A310 - - April 25, 2013
Isolated Stimulation and Stimulus Isolators
The term stimulation refers to the delivery of energy of some kind to a biological tissue in order to elicit an observable response.
Although the energy used in stimulation may be chemical, thermal, mechanical or electrical, this discussion will focus on electrical stimulation. Electrical stimulation of biological tissues involves the delivery of current and voltage to the stimulation site. The two quantities are related by Ohm's law:
V=IR
Where V is the applied voltage, I is the current and R is the electrical resistance of the tissue and or the stimulating electrodes. This simple equation shows that if voltage is constant, current flow will diminish if the tissue/electrode resistance goes up, and will increase if the resistance decreases.
More commonly, the resistance of tissue differs from sample to sample, and the resistance of the electrodes changes with applied current over time in a process called polarization.
Types of Stimulus Devices...more
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