Investigating perceptual simultaneity between nociceptive and visual stimuli by means of temporal order judgments.

Multisensory interactions between pain and vision allow us to adapt our behavior to optimize detection and reaction against bodily threats. Interactions between different sensory inputs are enhanced when they are perceived closely in space and time. However, thermo-nociceptive and visual stimuli are conveyed to the cortex through specific pathways with their own conduction velocity.