[Is it possible to transfer learned coordination of head and forepaw movements in dogs]

Dogs were trained for tonic forelimb flexion fixed to a lever in order to hold a cup with meat during eating, when the head was bent down to a foodwell. Before learning, the forelimb flexion is accompanied by the anticipatory lifting of the head bent down to the foodwell; following lowering of the head leads to an extension of the flexed forelimb. Simultaneous holding of the flexed forelimb and lowered head is achieved by learning. During the original learning, the innate head-forelimb coordination was rearranged into the opposite one. After the initial instrumental learning, the "working" forelimb was changed to test whether a transfer of the learned head-forelimb coordination would occur. It was shown that the execution of the instrumental reaction by the untrained forelimb was impossible, because the innate coordination between the head and this forelimb persisted. It could also be rearranged by learning. The involvement of the motor cortex in the unilateral rearrangement of the innate head-forelimb movement coordination is discussed.