Dr. Hideya Sakaguchi, a study author and postdoctoral fellow at Kyoto University (currently at the Salk Institute), said in an email that this was not just about creating a mini-brain, but that a nerve cell detection tool had been developed , One day, this new calcium ion analysis tool could help researchers better understand complex brain functions and neurological disorders.
For the new study, the researchers first created a ball of pluripotent stem cells that can develop into any type of body cells and tissue. They placed this ball in a bowl filled with a liquid medium that mimics the environment necessary for a developing brain. From here, the researchers studied the connections and activity between individual neurons.
For those who fear that the mini-brains have human-like properties (and thus represent ethical dilemmas), it is beyond question that the organoids are unable to perform advanced functions because they lack input from their environment Sakaguchi said. Consciousness requires subjective experience, and that only happens when information is received from probing, sensory tissues ̵
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