| eevoke cognitive stimulation |
| eevoke is a stimulation package for cognitive research that can present media such as images, sound or movies as stimulus to the patient or subject. eevoke runs on a PC with the Microsoft Windows XP operating system. Stimulus presentations can be visual, auditory or a combination of these. Besides, eevoke can be interfaced with external devices such as flash, electrical or pain stimulators. Trigger information is sent to external devices by means of serial or parallel port connection. eevoke provides optimal synchronization of the stimuli with your recordings and maximum ease of use. |
Scenarios Using the eevoke package, stimulations are controlled through a scenario. Scenarios contain information regarding timing, response pads, event codes, and multimedia files. This way, both presentation and corresponding controlling information are running in parallel, yielding a highly flexible and adaptable environment for stimulation. | ||
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Dual monitor support eevoke supports dual-monitor display. This neat feature allows to run the experiment on the subject's display and at the same time monitor the stimuli as well as the reactions of the subject on a control display. |  | ||
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Cue points Cue points in sound files can be used as extra triggers. This is extremely useful when you want to present sentences or music and you need to mark the beginning and end of certain pieces in the sound. eevoke automatically creates one trigger at the start of the sound file and then additional ones at the cue points inside the sound file. Cue points are part of the wave file definition and can easily be edited using, e.g., the GoldWave editor. |  | ||
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Scenario generation in MS Excel Scenarios are easily generated in Microsoft Excel using our Scenario Generator. Worksheets are used to set up the scenario using high-level functions and to define stimulus parameters and stimulus material. A special eevoke toolbar in Microsoft Excel is used to insert functions, browse to stimulus files, randomize tables with stimuli and codes, and to test the stimulation from within MS Excel. The Scenario Generator makes the design and testing of new scenarios highly efficient. |  | ||
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Accuracy of timing events The delay between the moment a stimulus is presented to the subject and the moment a trigger code is sent to the amplifier is below 1 ms. Visual stimuli are presented in synchrony with the refresh rate of the stimulation monitor.Changes in hardware are supported, but may affect the timing. For this reason we provide systems thoroughly tested, and tuned for optimal accuracy. Please contact us for more details. | ||
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