A system for analyzing an electroencephalogram (EEG) recording, the system comprising: a plurality of electrodes for generating a plurality of EEG signals; at least one amplifier connected to each of the plurality of electrodes by a plurality of wires to amplify each of the plurality of EEG signals; a processor connected to the amplifier to generate an EEG recording from the plurality of EEG signals, the EEG recording comprising a plurality of channels displaying brain activity, each channel of the plurality of channels corresponding to a difference in the electrical activity detected by two electrodes of the plurality of electrodes; and a display connected to the processor for displaying an EEG recording; wherein the processor is configured to process the EEG recording to create a processed EEG recording for analysis; wherein spike detections by spike foci are identified in the processed EEG recording, wherein each spike of the spike foci is an isolated wave or pattern distinct from a background activity of the processed EEG recording, and each isolated wave or pattern has a pointed peak and a duration ranging from 20 to 70 milliseconds; wherein the processor is configured to sort the spike detections by spike foci in the processed EEG recording according to each of the plurality of electrodes; and and to display the averages of the spike detections by spike foci on the display of the system; wherein a spike detection sensitivity slider allows selection of sensitivity for display, such that detections corresponding to sharp transients that have a high probability of being epileptiform abnormalities are displayed when the spike detection sensitivity slider is in a first position and detections corresponding to both the sharp transients that have a high probability of being epileptiform abnormalities and lower amplitude transients are displayed when the spike detection sensitivity slider is in a second position, wherein the second position corresponds to a higher sensitivity than the first position. a plurality of electrodes for generating a plurality of EEG signals; at least one amplifier connected to each of the plurality of electrodes by a plurality of wires to amplify each of the plurality of EEG signals; a processor connected to the amplifier to generate an EEG recording from the plurality of EEG signals, the EEG recording comprising a plurality of channels displaying brain activity, each channel of the plurality of channels corresponding to a difference in the electrical activity detected by two electrodes of the plurality of electrodes; and a display connected to the processor for displaying an EEG recording; wherein the processor is configured to process the EEG recording to create a processed EEG recording for analysis; wherein spike detections by spike foci are identified in the processed EEG recording, wherein each spike of the spike foci is an isolated wave or pattern distinct from a background activity of the processed EEG recording, and each isolated wave or pattern has a pointed peak and a duration ranging from 20 to 70 milliseconds; wherein the processor is configured to sort the spike detections by spike foci in the processed EEG recording according to each of the plurality of electrodes; and and to display the averages of the spike detections by spike foci on the display of the system; wherein a spike detection sensitivity slider allows selection of sensitivity for display, such that detections corresponding to sharp transients that have a high probability of being epileptiform abnormalities are displayed when the spike detection sensitivity slider is in a first position and detections corresponding to both the sharp transients that have a high probability of being epileptiform abnormalities and lower amplitude transients are displayed when the spike detection sensitivity slider is in a second position, wherein the second position corresponds to a higher sensitivity than the first position. <EOS>