Abstract
Administered heart rate (hr) and corneoretinal potential (crp) differential conditioning and reversal training to 22 albino rabbits. Group t-t received 1 frequency tone as cs+ and another as cs-. Group l-l received increase or decrease of overall compartment illumination as cs+ and the other stimulus as cs-. Group l-t (t-l) received increase in illumination or tone as cs+ and the other stimulus as cs-. Increases in compartment illumination were effective as the cs+ for hr but not crp conditioning in the l-t (t-l) group, and for both hr and crp conditioning in l-l group. The hr crs were decelerative in the t-t group, but accelerative for l-l ss. (16 ref.)
