A note on the response characteristics of the extraocular muscle system

Using records of the response of the extraocular muscle system to a step input, the frequency response characteristics of the system have been calculated. They show a progressive reduction of gain for frequencies above 30–40 cps. The high frequency tremor of the eyes observed during “steady” fixation would thus be expected to be damped down and this is in fact borne out by frequency analyses of tremor records.