Human Brain Surrogates Research: The Onrushing Ethical Dilemma

Area of Science:

• Neuroscience
• Bioethics

Background:

• Studying living human brains is crucial for understanding brain function.
• Ethical and legal constraints limit direct human brain research.

Purpose of the Study:

• To outline the ethical dilemma arising from advanced human brain research models.
• To explore the potential ethical implications of increasingly sophisticated brain surrogates.

Main Methods:

• Review of current limitations in human brain research.
• Identification and categorization of four types of human brain surrogates: genetically edited non-human animals, human/non-human brain chimeras, human neural organoids, and living ex vivo human brain tissues.

Main Results:

• Development of sophisticated human brain surrogates offers new research avenues.
• These advanced models may necessitate new ethical and legal frameworks.

Conclusions:

• The advancement of human brain models presents a significant ethical challenge.
• Future research must consider the moral status of complex brain surrogates.