Which would increase the resolution of EEG spikes?

Which would increase the resolution of EEG spikes?

• A. Decreasing the sensitivity
• B. Recording with a high sampling rate
• C. Using a 100µv input voltage
• D. Applying 50/60 Hz filter

Answer: (B)

Temporal resolution of EEG spikes is determined by how often the signal is sampled. Recording with a high sampling rate provides many data points across a fast spike, so you can pinpoint the exact onset, peak, and end, and measure its duration and morphology more accurately. That increased time sampling lets you see rapid transient changes that could be missed at a lower rate, improving spike resolution. Lowering sensitivity mainly affects how small signals are displayed or detected, not how finely time is represented. A fixed 100 µV input range sets amplitude scaling rather than temporal detail. A 50/60 Hz filter attenuates or removes higher-frequency components of the spike, which blurs the sharp edges and reduces temporal precision.

Temporal resolution of EEG spikes is determined by how often the signal is sampled. Recording with a high sampling rate provides many data points across a fast spike, so you can pinpoint the exact onset, peak, and end, and measure its duration and morphology more accurately. That increased time sampling lets you see rapid transient changes that could be missed at a lower rate, improving spike resolution.

Lowering sensitivity mainly affects how small signals are displayed or detected, not how finely time is represented. A fixed 100 µV input range sets amplitude scaling rather than temporal detail. A 50/60 Hz filter attenuates or removes higher-frequency components of the spike, which blurs the sharp edges and reduces temporal precision.