A subjective vision testing system is used for visual function tests for examinees. At least a portion of the seat is moveable away from the user’s legs when the seat is in the standing orientation. The driving link has a pin formed thereon to drivingly engage an intermediate link. The one or more undesired somatic responses are reduced by selecting an adapted signal format using charge-balanced triphasic electrical stimulation pulses to apply stimulation signals to one or more of the stimulation electrodes. The voltage supply circuit is connected to the select line and the pass word line, and is configured to supply the select line and the pass word line with a ground voltage in response to a block select inverse signal. The liquid discharge head of the present invention includes a discharge hole, a discharge hole surface having an opening of the discharge hole, a pressurizing chamber, and a flow channel connecting the discharge hole and the pressurizing chamber.