A neurochemical hypothesis for the origin of hominids.

  title={A neurochemical hypothesis for the origin of hominids.},
  author={Mary Ann Raghanti and Melissa K Edler and Alexa R. Stephenson and Emily L Munger and Bob Jacobs and Patrick R. Hof and Chet C. Sherwood and Ralph L. Holloway and Cody Lovejoy},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={115 6},
It has always been difficult to account for the evolution of certain human characters such as language, empathy, and altruism via individual reproductive success. However, the striatum, a subcortical region originally thought to be exclusively motor, is now known to contribute to social behaviors and "personality styles" that may link such complexities with natural selection. We here report that the human striatum exhibits a unique neurochemical profile that differs dramatically from those of… CONTINUE READING
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