Disclosed is a method for determining a parameter from brainwave data. The method comprises the step of attaching at least a single non-invasive electrode to a non-human animal (502) wirelessly obtaining data indicative of brainwave activity from the non-invasive electrode (504) analysing the data indicative of brainwave activity and determining at least one parameter indicative of a level of attentiveness or a level of alertness from the analysing. The step of analysing the data comprises conducting a first frequency normalisation over time and conducting a second frequency normalisation across frequencies for producing a doubly normalised spectrogram.
