The success of an animal species in its relationships with the external environment is dependent on how well it can adapt to changes in that environment. Part of this adaptation is, of course, evolutionary and, by the process of natural selection, leads to the emergence of new species over time. Within the lifetime of an individual animal success is strongly dependent on that animal’s ability to adapt to the environment and, in particular, to alter its behaviour in appropriate ways. The capacity to alter behaviour is a result of changes in the nervous system. These changes constitute learning and memory.
KeywordsDepression Ethyleneglycol Adenosine Serotonin NMDA
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