Stimulus substitution and response learning in the earthworm.

Abstract

Earthworms trained in a simple T-maze with shock stimulation in the negative arm showed, after 150 trials a statistically significant error reduction coupled with increased time scores. The learning is analyzed into two components, an initial conditioned avoidance of the junction followed by selective learning of the correct turn-response. (PsycINFO Database Record (c) 2006 APA, all rights reserved)