Table 4.

The vergence responses to expanding and contracting radial optic flow before and after the ibotenic acid injections

	Prelesion		Postlesion		Percentage of reduction
	Expand	Contract	Expand	Contract	Expand	Contract
Monkey Q	+14.8	−4.5	+1.0	−0.9	+93**	+80**
Monkey N	+13.9	−11.7	+6.8	−4.7	+51*	+60**
Monkey P	+19.3	−19.3	+2.2	+4.9	+89**	+125**
Monkey R		−26.0		+4.2		+116**
Monkey S	+41.1		+18.9		+54**

The prelesion and postlesion entries are the change-in-vergence position measures (over the time period 50–100 ms from stimulus onset) in degrees × 10⁻³; a positive sign indicates convergence, and a negative sign indicates divergence. Blank entries indicate that the response failed to exceed twice the SD of the baseline noise. Reductions exceeding 100% indicate reversal of the RFVR.

*p < 0.05;

**p ≤ 0.001.