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. Author manuscript; available in PMC: 2020 Apr 23.
Published in final edited form as: Cell Stem Cell. 2019 Oct 3;25(4):462–472. doi: 10.1016/j.stem.2019.09.002

Figure 2. Tiers of Brain Function Enhancement in Chimeric Animals.

Figure 2.

We contend that not all types of brain function have the same import when considering their potential enhancement. Cognitive functions such as memory require greater scrutiny than basic sensorimotor activity. At the top of the pyramid is self-awareness or sentience. The basis for this hierarchy is the degree of moral status that may need to be conferred to brain chimeras that achieve enhancement of these functions.