Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kathleen C. Light and Paul A. Obrist,"Task Difficulty, Heart Rate Reactivity, and Cardiovascular Responses to an Appetitive Reaction Time Task",Psychophysiology,0048-5772,Wiley,1983-05,20,3,301-312,https://cir.nii.ac.jp/crid/1360855568759968128,https://doi.org/10.1111/j.1469-8986.1983.tb02158.x