The Dry Sensor Interface (DSI) series integrates QUASAR¡¯s revolutionary dry electrode technology that acquires clean EEG signals, without the need for skin preparation or gels, and without compromising on signal quality. The DSI EEG signals are comparable to those obtained from wet electrode systems and are resistant to electrical and motion artifacts. The DSI wireless EEG headsets are designed for speed and ease of use, comfort, and mobility in real-world environments. This world leading dry electrode technology is revolutionizing EEG use in research, neurofeedback, brain-computer interfaces, neuromarketing and more.
Applications | DSI 24 | DSI 7 | DSI-Hybrid-EEG+fNIR | VR300 | DSI 4 |
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Neuroscience Research | ![]() |
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Neuromarketing | ![]() |
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BCI & Neurogaming | ![]() |
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Ergonomics & Biometrics | ![]() |
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Neurofeedback | ![]() |
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Custom Solutions | |||||
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Specifications | DSI 24 | DSI 7 | DSI-Hybrid-EEG+fNIR | VR300 | DSI 4 |
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Headset | Ideal for long-term ambulatory use in realworld environments | Ideal for ultra-rapid use in realworld environment. | Ideal for ultra-rapid use in realworld environment. | Designed for integration with HTC Vive. Ideal for P300 in VR | Fixed sensors on spring-loaded arms and pods for sensor support |
Sensor Locations | 21 sensors at International 10/20 System locations: Fp1, Fp2, Fz, F3, F4, F7, F8, Cz, C3, C4, T3, T4, T5, T6, Pz, P3, P4, O1, O2, A1 and A2; and 3 auxiliary channels for EMG, EOG, ECG | 7 sensors at the following International 10/20 System locations: F3, F4, C3, C4, Pz, P3, P4 + Linked Ears (optional location customization and ECG) | 8 sensors at 10-20 locations: Fp1, Fp2, C3, C4, T7/T3, T8/T4, , O1, O2, A1, A2 | 7 sensors at the following International 10/20 System locations: FCz, P3, Pz, P4, PO7, Oz, PO8 + Linked Ears | 4 sensors at 10/20 locations: F7, F8, Fp1, Fp2 |
Set-up Time | 3-5 Minutes | 1-3 Minutes | 1-3 Minutes | 1-3 Minutes | - |
Sensor Type |
Dry active hybrid Resistive/Capacitive, through hair and reusable
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Dry active hybrid Resistive/Capacitive, through hair and reusable | Dry active hybrid Resistive/Capacitive, through hair and reusable | Dry active hybrid Resistive/Capacitive, through hair and reusable | Dry active hybrid Resistive/Capacitive, through hair and reusable |
Sampling Rate | 300 Hz | 300-600 Hz | 300 Hz | 300 Hz | 300 Hz (600 Hz option) |
Triggers | 8 bit | 4 bit | 8 bit | 4 bit | 4 bit |
3D Accelerometer | Optional | Optional | Optional | Optional | - |
Communication Modes | Bluetooth Wireless and Wired USB Modes. Optional On-Board Storage | Bluetooth Wireless and Wired USB Modes. Optional On-Board Storage | Bluetooth Wireless and Wired USB Modes. | Bluetooth Wireless and Wired USB Modes. | Bluetooth Wireless |
Bluetooth Range | 10m / 30feet | 10m / 30feet | 10m / 30feet | 10m / 30feet | 10m / 30feet |
Included Software | DSI-Streamer Data Acquisition Software and API | DSI-Streamer Data Acquisition Software and API | DSI-Streamer Data Acquisition Software and API | DSI-Streamer Data Acquisition Software, API, and Unity and Unreal SDK for VR | - |
Ambulatory | Yes | Yes, With Stabilization Strap | Yes | Yes | - |
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