SynAmps RT amplifier
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Detailed Overview of Functionality SynAmps RT is the latest EEG and ERP amplifier from Compumedics Neuroscan. Using the most current technology, the RT builds on the quality of the past SynAmps series of amplifiers and extends the specifications beyond anything that has come before. SynAmps RT sets a new standard in amplifier technology, providing a system suitable for recording everything from high sampling rate (20,000 Hz) Auditory Brain Stem recordings and Spike Spindles to true DC recordings of CNV and P300. The SynAmps RT also serves as the recommended platform for recording in the MRI, in conjunction with the MagLink RT system. SynAmps RT includes clock synchronization circuitry, allowing the amplifier to synch with other devices, such as MR scanners, more precisely, without the need for very fast acquisition rates. SynAmps RT can be used in conjunction with the CURRY software, providing a complete acquisition and analysis system, or with the ACCESS SDK, allowing user’s custom built software to control and acquire data from the system. SynAmps RT can also be used with the STIM 2 system for integrated and accurate stimulus presentation or will accept TTL pulses from third party systems. SynAmps RT can be used with the QuikCap, to provide fast and simple electrode placement or will accept any touch proof electrode as well. Grid, depth and microelectrodes may also be used with the SynAmps RT. SynAmps 2 systems can be upgraded to the SynAmps RT, which will improve many of the critical specifications. Please contact Neuroscan Sales for specific details. Feature and Function Summary Channel Count Per Headbox: 64 Monopolar, 4 Bipolar, 2 High Level Utilizing the latest technology, SynAmps RT allows for discrete monopolar and bipolar channels, enhancing the flexibility of recordings. Additional high level inputs are isolated to allow voltage level signals to be merged with the physiological data. Linking headboxes together allows more than 500 channels to be recorded. A fully isolated, programmable bipolar excitation supply is also provided capable of supplying up to +/- 10VDC at 100mA to external bridges or measurement devices. Maximum Sampling Rate: 20,000 Per Channel all channels driven Faster sampling rates allow for more accurate sampling of the analog data being recorded. Signals such as Auditory Brain Stem Response require these faster rates, while typical ERP measures benefit from increased resolution. Sampling Method: All Channels Sampled Simultaneously Current technology eliminates the problems associated with sample and hold circuits. Utilizing a dedicated 24-bit A to D chip for each channel, the SynAmps RT enhances resolution and accuracy of each sample by ensuring a more valid measure of the data without decay or skew. The 24-bit resolution allows for even the most subtle differences in amplitude to be measured accurately. Recording Bandwidth: DC to 3500 Hz Many slow potentials (i.e., P300, MMN, CNV) have components that can only be measured accurately using a DC amplifier. DC amplifiers are also not subject to the AC coupled, filter time constant that distorts recordings after an artifact. The high frequency end of the SynAmps RT's range allows for more accurate recording of the fastest frequencies. Active Noise Cancellation: Utilizing advanced driven reference technology SynAmps RT sets a new standard for amplifier design, both in terms of safety and signal quality. Actively sampling environmental noise, and applying an antiphase signal to eliminate that noise, elevates the CMRR to unprecedented levels. This technology also provides increased patient protection.

Recording in fMRI Environments: Integration with the MagLink RT System The same amplifier that is used in standard recording environments can also be used to record EEG data in the MRI by interfacing to the MagLink RT system. SynAmps RT was built with enough input range and accuracy to sample both the EEG and the fMRI artifact with sufficient resolution to remove the artifact and ensure the EEG is left intact. >10 G Ohm Input Impedance: Allows standard impedance or fast preparation to be obtained SynAmps RT allows you to choose on a subject by subject basis to prepare the scalp electrode...