Classical Conditioning Experiments

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Out of the groups with living planarian and consistent data, 14 of the 41 had both sections respond to the light and six had neither respond. The most responsive section was shown to be the head section, with 29 responses, and the tail section only ended up with seven responses. These planaria that did react to the light showed that the classical conditioning was able to work on them by showing a reaction to the light without being shocked. These results show that the majority of the planarian had some kind of a reaction with 36 of the 41 had either the tail or the head react. Unfortunately, these results are not completely accurate due to the fact that a few planaria died and a few groups added data from the regenerated planaria instead of from the original. Also, some of the data was inconsistent because the table would say the head or tail responded, but was stated in the comments that the planarian was dead. Another issue with the results was that some groups were unsure if a section had responded or not. There were also most likely a few unknown errors as well. There could have been a reaction that was …show more content…

This experiment proved that both sections can react, although not all will. The most common was for only the head section to react to the light. This may be due to the fact that planarian have most of the same neurotransmitters that humans have, but also a bonus, the ability to grow the brain back. Levin, a professor and director of the Tufts Center for Regenerative and Developmental Biology, believes that when a planarian regrows the brain, the same memories are still retained. Animals store memories inside the brain, although, his experiments show that planaria also can store them outside of the brain, in other body tissues (Blanding

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