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DBPA Acquisition Software and Stimulus Integration
For instance, it is widely known that stimulus systems running under Windows system have a multitude of timing anomalies. While many of the stimulus system providors have developed elaborate workaround solutions, virtually none of the EEG manufactures have considered this in their system design. Sensorium, has developed a solution to account for these timing anomalies, where the stimulus event information is captured digitally via standard TTL pulse and then validated using an external photodiode identification of stimulus onset. This validation check ensures accurate timing of ERP’s and thus a more accurate average representation.
Similar considerations have been given to audio stimulus signals. An optional audio transducer system is available that measures the RMS voltage from 20-20KHz and converts the amplitude to DC, which is used as a stimulus event trigger. This method is a hardwired approach to ensure accuracy of audio trigger timing. Audio signals take on all types of wave forms, so designing a circuit for all wave forms is difficult at best and most don't work well. Our approach using the RMS based voltage generates a specific DC amplitude depending on the specific RMS voltage. This means that the trigger point can be at any in range DC voltage. Defining Excellence means attention to detail.
The DBPA amplifier includes a complete data acqusition software package.
The DBPA software program allows for seamless export of data files for Excel, MatLab, EMSE, EDF+, EEGlab and other common analysis programs. By focusing on the acquisition side of the system, Sensorium ensures the highest quality of data recorded and gives the user maximum flexibility in post processing tools.
Biofeedback and brain computer interface applications are supported by digital output signals synchronized to custom defined data metrics which drive stimulus devices such as audio stimulators, tachistoscopes and somatosensory devices and other mechanized elements.
Serious considerations must be made when connecting third party devices to any amplifier system. Sensorium ensures hospital grade IEC60601-1-BF safety compliance by incorporating a isolation circuit at all third party interface points.
Using the DBPA hardware and software provides an excellent solution for recording EEG and ERPs. We have carefully considered all of the details that make your data acquisition both safe and successful. We have also developed a solution that lets you choose the analysis method that best suits your lab’s needs.
Defining Excellence in EEG!