Self-Consciousness and "Split" Brains

Exploring the experiences of split-brain subjects, Self-Consciousness and 'Split' Brains examines the duality of consciousness and identity within a single individual.

In Self-Consciousness and 'Split' Brains, Elizabeth Schechter delves into the complexities of consciousness as experienced by individuals who have undergone a surgical procedure to sever the corpus callosum, the bridge connecting the two hemispheres of the brain. This operation, primarily performed to treat severe epilepsy, results in what are known as split-brain subjects. Schechter posits that these individuals possess two distinct minds, each with its own stream of consciousness and intentionality, yet they still function as a single entity. This duality raises profound questions about the nature of identity and the essence of being human.

The book navigates the philosophical implications of having two operational centers of consciousness within one body. As Schechter explores the behaviors and experiences of split-brain subjects, she highlights the tension between the duality intuition—suggesting that they are composed of two separate minds—and the unity intuition, which asserts that they remain one person. Through various examples and thought experiments, the author illustrates how each hemisphere can exhibit independent thought and action, complicating our understanding of self and consciousness.

Ultimately, Self-Consciousness and 'Split' Brains invites readers to reconsider the nature of self-awareness and the intricate relationship between mind and body. By examining how self-consciousness shapes our identity, Schechter provides a compelling argument for recognizing the complexity of human experience, even in cases where the brain's structure is altered. This exploration not only challenges our assumptions about consciousness but also encourages a deeper understanding of what it means to be a singular person in a multifaceted world.