According to the 2016 ACNS Guidelines, the minimal horizontal resolution recommended is:

The recommendation for a minimal horizontal resolution of 16 bits, as outlined in the 2016 ACNS Guidelines, is grounded in the need for high fidelity in capturing and processing electrical signals during neurological assessments. A 16-bit resolution allows for a greater number of discrete amplitude levels, specifically 65,536 (2^16), enabling the detection of subtle changes in brain activity that might be missed with lower resolutions. This increased sensitivity is crucial for accurate diagnoses and monitoring in clinical neurophysiology.

Higher bit resolution improves the dynamic range and detail of the signal processing, which is particularly important in settings where precise measurements of brain electrical activity are essential. In contrast, lower resolutions, such as 8 bits, would result in only 256 (2^8) levels of amplitude, significantly limiting the ability to capture the full complexity of the neural signals being measured. This recommendation reflects a commitment to ensuring that clinical practices meet high standards of accuracy and reliability in detecting and interpreting neurological functions.