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A simple computer-controlled analogue ramp generator for producing multiple ramp-and-hold stimuli.
1Department of Zoology, University of Canterbury, Christchurch, New Zealand.
Journal of Neuroscience Methods
|August 1, 1991
Summary
This study presents an affordable analog ramp generator for creating staircase waveforms, ideal for stimulating mechanoreceptive organs. The system offers precise control via computer, enabling detailed neural characterization.
Area of Science:
- Neuroscience
- Biophysics
- Engineering
Background:
- Mechanoreceptive sense organs require precise stimulation for accurate study.
- Existing digital function generators can introduce artifacts.
- Characterizing neuronal responses necessitates controlled stimuli.
Purpose of the Study:
- To develop an inexpensive analog ramp generator for producing ramp-and-hold stimuli.
- To enable artifact-free stimulation of mechanoreceptive sense organs.
- To facilitate complex stimulus sequence generation for neuronal studies.
Main Methods:
- An inexpensive analog ramp generator producing ramp-and-hold waveforms was designed.
- The system was coupled with a power amplifier and mechanical vibrator.
- Computer control via serial or user ports allowed programmable stimulus sequences.
Main Results:
- The generator produced artifact-free analog output, unlike digital generators.
- Complex ramp-and-hold sequences were successfully programmed and repeated.
- The system was effectively used to characterize locust chordotonal organ neurons.
Conclusions:
- The developed ramp generator is a cost-effective tool for stimulating mechanoreceptive organs.
- Computer control enhances the precision and complexity of stimuli for neurophysiological research.
- This system aids in the detailed characterization of neuronal responses to mechanical stimuli.