Object and being the device which quantitatively is measured be conscious the size of trembling is generated

摘要

PPROBLEM TO BE SOLVED: To provide a visual field rocking amount measuring instrument and method for measuring the subjective and nonsubjective rocking of a visual field in a patient having visual function abnormality or in a healthy person objectively and quantatively. PSOLUTION: By using a pattern figure performing 1/f fluctuating displacement on the visual field as a model of imitating of the rocking behavior of the visual field, a velocity time-series generation part 1 composes the velocity time series of the fluctuating displacement with a translation movement time series. A visual sense display part 2 realizes visual movement stimulation based on the composed movement time series, and shows it to an observer to make the observer discriminate the direction of translation. A movement detection area measuring part 3 obtains a translation velocity which is required for making its right answer ratio exceed a fixed standard as a movement detection threshold. A rocking amount detection part 4 describes the movement detection threshold as the function of the amplitude of rocking displacement to estimate an amount equivalent to a rocking amount occurring inside the visual system of the observer. PCOPYRIGHT: (C)2004,JPO