Fig. 2. MN-SSEP peak to peak amplitude of N20/P25 (A ) and MN-SSEP latency of N20 (B ) in relation to mean arterial pressure before (open circles) and during hypothermia (full circles). Means ± SDs from 11 patients undergoing resection of intraocular melanoma during progressive arterial hypotension with or without hypothermia of approximately 32°C.