منابع مشابه
Microcomputer-based pulse stimulator.
A low-cost PC-based 2-channel stimulator was designed. This device can generate regular current pulses for many neuroscience experiments. It can also generate irregular pulses for nerve stimulation, thus could possibly avoid the problem of sensitization or habituation in the central nervous system. The stimulation frequency (can be < 0.0005 Hz) and pulse duration (5 microseconds to 65 ms) of th...
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A simple constant-current electrocutaneous stimulator for high-impedance loads using low-cost, standard high-voltage components is presented. A voltage-regulator powers an oscillator built across the primary of a transformer whose secondary delivers, after rectification, the high-voltage supply to switched current-mirrors in the driving stage. Since the compliance highvoltage is proportional to...
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A?r.sfracf—A new configuration for realization of a stabilized bandgap voltage is described, The new two-transistor circuit uses collector current sensing to eliminate errors due to base current. Because the stabilized voltage appears at a high impedance point, the application to circuits with higher output voltage is simplified. Incorporation of the new two-transistor cell in a three-terminal ...
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Theoretical stimulation waveforms were implemented for bench testing on a research implantable pulse generator system for testing of safety and efficacy. The waveforms each consisted of a conditioning “pre-pulse” phase (e.g., a depolarizing pre-pulse) a stimulation phase, and a passive recharge phase. They were bench tested in a completely electronic system and in a saline model. The waveforms ...
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Recent developments in the surgery of the heart valves have made the pulse duplicator an indispensable research tool; the duplicator also provides a useful aid in the teaching of the movements of normal and pathological heart valves. Many types have been described in the literature, and a review (Austen, Shaw, Scanrell, and Thurlbeck, 1958; Barnard, McKenzie, and de Villiers, 1959; Bjork, Inton...
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ژورنال
عنوان ژورنال: Behavior Research Methods & Instrumentation
سال: 1977
ISSN: 1554-351X,1554-3528
DOI: 10.3758/bf03202211