Do Tonic Itch and Pain Stimuli Draw Attention towards Their Location?

Figure 1

Schematic representation of the setup of the somatosensory attention task. The side of itch stimulation was contralateral to the pain stimulation (randomized across participants). During a block, an itch (itch block) or pain (pain block) stimulus was applied, or no stimulation (control blocks), while, after short onset of the fixation light, one of the target lights illuminated. Participants responded to the target light location using response buttons right below both target lights, at either the ipsilateral or the contralateral location as opposed to the somatosensory stimulation.