Patient P.S. suffered a stroke that damaged the right side of her brain, leaving her unaware of everything on her left side. If someone threw a ball at her left side, she might duck. But she wouldn't have awareness of the ball or know why she ducked. Where does consciousness come from? Michael Graziano explores the question that has vexed scientists and philosophers for centuries. [Directed by TED-Ed, narrated by Addison Anderson].

Michael S. A. Graziano: What is consciousness?

What is consciousness?

Hemispatial neglect after a stroke reveals the brain's capability to process unseen stimuli, challenging our understanding of consciousness.

Consciousness may stem from the brain's models of its own activities, offering a simplified yet functional perception of reality.

MRI studies illuminate the neural networks of consciousness, paving the way for deeper insights into human identity and awareness.