Today, she says, she is a new person, one who “can step into the consciousness of my right hemisphere” on command and be “one with all that is.”

To her it is not faith, but science. She brings a deep personal understanding to something she long studied: that the two lobes of the brain have very different personalities. Generally, the left brain gives us context, ego, time, logic. The right brain gives us creativity and empathy. For most English-speakers, the left brain, which processes language, is dominant. Dr. Taylor’s insight is that it doesn’t have to be so.

Her message, that people can choose to live a more peaceful, spiritual life by sidestepping their left brain, has resonated widely.

In February, Dr. Taylor spoke at the Technology, Entertainment, Design conference (known as TED), the annual forum for presenting innovative scientific ideas. The result was electric. After her 18-minute address was posted as a video on TED’s Web site, she become a mini-celebrity. More than two million viewers have watched her talk, and about 20,000 more a day continue to do so. An interview with her was also posted on Oprah Winfrey’s Web site, and she was chosen as one of Time magazine’s 100 most influential people in the world for 2008.

She also receives more than 100 e-mail messages a day from fans. Some are brain scientists, who are fascinated that one of their own has had a stroke and can now come back and translate the experience in terms they can use. Some are stroke victims or their caregivers who want to share their stories and thank her for her openness.

But many reaching out are spiritual seekers, particularly Buddhists and meditation practitioners, who say her experience confirms their belief that there is an attainable state of joy.