In this episode of The Diary Of A CEO, neuroanatomist Jill Bolte Taylor explains how our brain contains four distinct "characters" that influence our thoughts, feelings, and behaviors. She describes the key differences between the left and right hemispheres: the left brain handles logic, language, and ego, while the right brain manages present-moment awareness, intuition, and creativity.
Taylor shares insights from her personal experience with a hemorrhagic stroke that left her left hemisphere non-functional for eight years, forcing her to experience life purely through her right hemisphere. The episode covers strategies for achieving better balance between the hemispheres, including methods to counteract society's tendency toward left-brain dominance, and explains how emotions naturally process themselves within 90 seconds when observed without reaction.

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Neuroanatomist Jill Bolte Taylor explains that our brain contains four distinct "characters" that shape our thoughts, feelings, and behaviors. These characters are tied to different regions of the brain: the left hemisphere's analytical and planning center, the left emotional centers dealing with past experiences, the right hemisphere's emotional content focused on present sensations, and a fourth character related to the right hemisphere's thinking capacities.
Taylor emphasizes that specialized cells in different brain regions enable specific cognitive and emotional abilities, from the Purkinje cells controlling movement fluidity to the vigilant amygdala scanning for threats.
The left hemisphere, as Taylor describes, houses our logical thinking, language skills, and sense of self. It's where our ego develops and where traumatic memories are stored. This hemisphere also processes addictive tendencies and maintains our vigilance against perceived threats.
In contrast, Taylor explains that the right hemisphere focuses on present-moment awareness, intuition, and creativity. When engaged, it produces feelings of relaxation, joy, and connection with the world around us. This hemisphere enables us to experience life holistically and fosters a sense of oneness with our surroundings.
Taylor points out that society tends to overemphasize left-brain thinking, creating an imbalance. She advocates for conscious engagement of both hemispheres, suggesting that awareness of which brain region is dominant can help achieve better balance. To counteract left-brain dominance, Taylor recommends activities like meditation and physical experiences that engage the right hemisphere.
Regarding emotions, Taylor notes they naturally last only 90 seconds if observed without reaction. She advises against chronic rumination, which can prolong emotional responses indefinitely, and instead encourages allowing emotions to run their natural course.
Following a hemorrhagic stroke that left her left hemisphere non-functional for eight years, Taylor experienced life purely through her right hemisphere. This resulted in a profound shift in her perspective, leading to increased present-moment awareness and a deep sense of connection to the universe.
During her eight-year recovery, Taylor chose not to simply reconstruct her pre-stroke self but instead developed an integrated whole-brain perspective. This experience led her to promote strategies for whole-brain living, emphasizing the importance of both hemispheres in maintaining mental well-being and fostering a more balanced approach to life.
1-Page Summary
Jill Bolte Taylor explains the complexity and sensitivity of the brain's structure and functions, emphasizing its importance in shaping our thoughts, feelings, and behaviors.
Jill Bolte Taylor posits that there are four distinct "characters" shaped by structured parts of our brain, each influencing how we think, feel, and behave. These characters represent the different aspects of our emotional and mental processes.
Taylor emphasizes the importance of understanding these characters to effectively engage different areas of the brain. By understanding the interplay between these characters, people can potentially use them to enhance their life experiences.
Taylor expresses that every ability we possess is due to brain cells specialized in those functions. Her focus as a cellular neuroanatomist allows her to understand how these cells contribute to our nervous system and overall brain health.
She discusses the significance of the ...
The Neuroanatomy and Functioning of the Brain
The distinctions between our brain's hemispheres point to complex neurological functions that influence our thoughts, behavior, and emotions. Jill Bolte Taylor offers insights into how each hemisphere contributes to different aspects of our humanity.
Jill Bolte Taylor conveys that the left hemisphere is responsible for our awareness of who we are, indicating its role in identity and self-awareness. It is also where our language skills reside, enabling us to read, write, and understand language, as well as to engage logically with mathematics. The motor system in this hemisphere controls the opposite side of our body. When stimulated, the left hemisphere prompts a focused and analytical mindset, as Steven Bartlett discovered under Taylor’s direction.
The left hemisphere houses our logical, rational, and analytical thinking. It likes to maintain control and is where the 'me' definition or ego center is found—our sense of self, personal information, and physical boundaries originate here. There’s an implication that this hemisphere's "me-centered" perspective could be tied to selfish behaviors or wanting more.
Additionally, our left hemisphere processes our past, including painful memories. Here, the emotional system remembers traumatic events in detail to avoid their recurrence. Addiction is also linked to this hemisphere, where the insular cortex houses our cravings. This area is vigilant, constantly on the lookout for reasons to react with emotional reactivity to new information.
In contrast, the right hemisphere is the domain of the present moment—being right here, right now. When Bartlett’s right hemisphere was stimulated, he felt more relaxed, akin to lounging in the sun. In this hemisphere, you exist as part of everything; your senses are integrated, fueling a sense of excitement about the possibilities.
The right hemisphere enables feelings of joy, peace, and o ...
Differences Between Left and Right Brain Hemispheres
Jill Bolte Taylor highlights the issue with society overly focusing on the two left brain parts that concentrate on the individual within the societal context. She points out that while these brain regions serve protective roles, they can become problematic if they're the only aspects valued. Taylor urges the importance of understanding different brain parts and being aware of which hemisphere is dominant to live a balanced, whole-brained life. She suggests that quieting the left hemisphere can reveal the potential of the right hemisphere, and she encourages observing oneself to recognize which brain character is predominant, whether it's the individual-focused or the playful aspects. By being aware of one's different brain characters, she believes people can lead more balanced lifestyles and improve well-being, particularly in high-stress professions like physicians.
Taylor discusses the significance of shifting from the stress circuitry of the left brain to the right brain's pause to allow for flexible responses. She advises that recognizing which brain character one is using at any moment can significantly control brain activity in diverse scenarios. Identifying the bodily sensations associated with each character can help switch between them more smoothly. Taylor emphasizes that society is mostly unaware of these potential choices due to the dominance of left-brain thinking and encourages conscious engagement of various brain parts to respond effectively and enhance life.
Taylor advocates for engaging right-brain activities to balance a lifestyle dominated by left hemisphere pursuits like linear thinking and goal achievement. She suggests that meditation can quiet the left hemisphere, while right hemisphere activities like feeling water while swimming or diving can bring balance. Taylor notes the importance of play for physicians and how little character three can provide a necessary pause to relieve stress from character one's chores. She values the right hemisphere's experiential opportunities, such as three-dimensional anatomy visualization, countering the left hemisphere's detailed focus.
Strategies For Balancing Whole-Brained Personalities
Jill Bolte Taylor’s stroke profoundly altered her perception and cognition, leading her to a renewed appreciation for life and a greater understanding of the brain’s capabilities.
Taylor suffered a hemorrhagic stroke, with a blood vessel explosion incapacitating cells and leaving her left hemisphere non-functional for eight years. She underwent surgery to remove a blood clot from her brain two and a half weeks after the hemorrhage. This catastrophic event marked a stark before and after in her life, profoundly shifting her perspective.
During the eight years of relying solely on her right hemisphere, Taylor experienced a present-moment blissful euphoria, filled with love, laughter, and a sense of connection to the universe. This newfound joy and liberation from her pre-stroke perspectives stemmed from her 'Character one,' the logical and business-focused aspect of her brain, effectively going offline. She was energetically infinite and detached from her body, wondering about the extent to which she could leave her physical form and still return.
Taylor’s appreciation for life intensified, finding wonder and gratitude in the mere act of living. Despite losing her left hemisphere's functions, she felt elated by experiencing life as a miracle of the universe. Following the stroke, she was more attracted to life’s collective, interconnected aspects rather than individualistic pursuits.
Taylor spent eight years rebuilding the left hemisphere’s skillsets. Throughout this time, she chose not to strive to become the person she was before the stroke, opting instead to develop a wholly integrated whole-brain perspective.
Her lengthy recovery process showcased the brain's remarkable neuroplasticity. By using what she had left in her right hemisphere, Taylor was able to progressively regain the functions of the left hemisphere post-stroke, culminating ...
Jill Bolte Taylor's Stroke and Its Impact on Her Perspective
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