Which statement is NOT true regarding Digital EEG recording per ACNS guidelines?

The statement concerning the sampling rate being at least 256 Hz is not aligned with the ACNS guidelines for Digital EEG recording. According to the guidelines, while a sampling rate that is at least 256 Hz is applicable to some situations, the standard recommendations often suggest higher rates, specifically 500 Hz or more, for clinical EEG recordings to capture the intricacies of brain activity accurately.

In contrast, the other statements accurately reflect the ACNS guidelines. The requirement for noise to be less than 2 microvolts ensures that the signal-to-noise ratio is optimal for detecting brain waves against background interference. The common-mode rejection ratio (CMRR) of at least 100 dB helps ensure that any electrical interference common to all electrodes is effectively minimized, allowing for clearer readings of the brain’s electrical activity. A resolution of at least 12 bits ensures that the recorded signals are detailed enough for proper analysis.

These specifications are essential in establishing a high-quality EEG recording, which is crucial for accurate diagnosis and treatment.