Stimulus hardware

Electrical stimulation Brief pulses of electricity are used in various biomedical research applications as a stimulus to excite nerve or muscle fibers. In EP research, electrical stimulation is commonly used to elicit somatosensory evoked potentials. Several factors need to be considered to choose the right stimulator for your application.

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g.STIMunit - multimodal The g.tec MATLAB based multi-modal stimulation unit is a highly flexible and user-adaptable tool for application in all fields of brain and life sciences. g.STIMunit provides standard paradigms for motor–, cognitive–, perceptual tasks and biofeedback. All standard paradigms can be modified with an integrated paradigm parser. Users can easily set up their own experimental sequences in different modalities (visual, auditory or tactile).

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Auditory stimulation We offer piezoelectric insert earphones with pneumatic sound delivery via tubes to permit auditory stimulation without any concern for electromagnetic artifacts in simultaneously measured electrophysiological responses. Also, our precision audio attenuator can be used to deliver dB spL calibrated sound via earphones.

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Timing and control Computers now play a dominant role in experimental control applications, but everyone knows that operating systems and video/audio hardware are unpredictable and unreliable to a degree. You should not just assume that that stimuli appear when you want or expect them to, or that stimuli and triggers leave the experimental control computer at the same time. Nor should you take the word of the software developer that there are no timing problems in his software.

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