Transfer of FR Response Rate Bias to FI Trained Guinea Pigs by Injection of Brain Homogenate

In an attempt to delineate the physiological and/or chemical nature of the memory process, some researchers have reported that by introducing all or part of the brain of a trained animal into the bloodstream of another animal, the recipient thereby acquires a tendency to respond as the donor was trained. However, almost as many researchers have failed to obtain significant results. Because many of the early experiments had less than optimum designs, their results were often equivocal. Critics frequently pointed out that perhaps increased learning efficiency was due merely to a sensitizing or stimulating effect of the injection and not to any specific transfer of learning. It was in an attempt to answer this criticism that the following experiment was performed