{"id":105681,"date":"2023-06-18T10:39:00","date_gmt":"2023-06-18T14:39:00","guid":{"rendered":"https:\/\/www.shortform.com\/blog\/?p=105681"},"modified":"2026-01-22T14:00:09","modified_gmt":"2026-01-22T18:00:09","slug":"what-does-the-cerebral-cortex-do","status":"publish","type":"post","link":"https:\/\/www.shortform.com\/blog\/what-does-the-cerebral-cortex-do\/","title":{"rendered":"What Does the Cerebral Cortex Do? Function and Structure"},"content":{"rendered":"\n

What does the cerebral cortex do? What’s the difference between the cerebral cortex’s functions on the left side and the right side of the brain?<\/p>\n\n\n\n

Jill Bolte Taylor’s book Whole Brain Living<\/em> describes four characters that help the brain function. Two of these characters (Characters 1 and 4) make up the cerebral cortex.<\/p>\n\n\n\n

Discover more about the functions of the cerebral cortex and how it forms your thought processes.<\/p>\n\n\n\n\n\n\n\n

Left-Side Cerebral Cortex\u2014Structured Thinking<\/strong><\/h2>\n\n\n\n

What does the cerebral cortex do? According to Taylor, the cerebral cortex on the left side of the brain values practicality the most and is highly attuned to your ego\u2014your sense of being an individual.<\/strong> Character 1 focuses on differences (between physical objects and people) and excels at defining boundaries and establishing routines. This character uses their rational and ordered thinking to analyze, organize, and formulate plans. On the other hand, Taylor says that Character 1\u2019s structured thinking can be too<\/em> rigid, and it\u2019s also the part of us that judges ourselves and others harshly, makes unhealthy comparisons between people, and is only satisfied by external forms of affirmation such as wealth and social status.<\/p>\n\n\n\n

Character 1\u2019s Personality Profile Is Linked to Taylor\u2019s Healing Journey<\/strong>

Although some research aligns with Taylor\u2019s description of Character 1, other aspects of her Character 1 profile are likely based on her personal journey of primarily inhabiting her right hemisphere post-stroke and slowly regaining her left hemisphere functions. 

For example, research supports the idea that the cerebral cortex as a whole supports higher-level thinking and reasoning skills<\/a>. It\u2019s associated with a wide range of brain functions<\/a>, including memory, problem-solving, reasoning, sensory processing<\/a>, and motor skills. However, research on how the brain distinguishes borders<\/a> between objects doesn\u2019t differentiate between the roles of the left and right hemispheres. This observation about Character 1 may stem from Taylor\u2019s experience\u2014described in My Stroke of Insight<\/em><\/a>\u2014of losing all sense of her body\u2019s physical boundaries<\/a> when she experienced the stroke in her left hemisphere.

Likewise, it\u2019s difficult to identify evidence linking the left hemisphere cerebral cortex with the judgmental and extrinsically motivated<\/a> personality type that Taylor describes. This analysis may have been influenced by her experience of losing her judgmental tendencies<\/a> in the aftermath of her stroke.)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Here\u2019s how Taylor describes Character 1 in different contexts:<\/p>\n\n\n\n

Taking care of your body<\/a>: <\/strong>Character 1 tends to treat the body like a valuable tool needed to get things done. Because of this, Character 1 optimizes the body\u2019s health through regular check-ups, pays close attention to detail<\/a> when it comes to diet and exercise, and tends to manage illness by learning as much as possible about it and taking appropriate action. <\/p>\n\n\n\n

(Shortform note: Taylor implies that Character 1 takes meticulous care of the body because the higher-level thinking in the cerebral cortex<\/a> makes Character 1 detail-oriented and able to think through the cause and effect of your actions. For example, Character 1 might reason \u201cIf I eat a salad instead of junk food now, I\u2019ll probably feel better later on.\u201d)  <\/p>\n\n\n\n

Workplace: <\/strong>Character 1 tends to take on a leadership role in the workplace in one of two ways\u2014what Taylor refers to as a \u201cHard 1\u201d or a \u201cSoft 1.\u201d Hard 1s are so determined to get things done efficiently that they can be overly critical of their colleagues and themselves. They like to do things their own way and aren\u2019t receptive to feedback. On the other hand, Soft 1s are supportive and good at organizing their team members, set clear expectations, and strive for improvement. <\/p>\n\n\n\n

(Shortform note: We can infer that Hard 1s might result from being hyperfocused on creating order and executing plans\u2014skills that are often associated with the frontal lobe<\/a> of the cerebral cortex. In The Leadership Challenge<\/em><\/a>, James M. Kouzes and Barry Z. Posner say good leaders exhibit certain traits<\/a>, and these traits align with those found in Soft 1s. Good leaders must empower others by fostering a relationship of collaboration and trust, and they must show that they genuinely care about their team members. Kouzes and Posner argue that these characteristics, along with setting an example, inspiring others, and challenging the status quo<\/a>, help you become a leader that others want <\/em>to work with.)  <\/p>\n\n\n\n

Romance: <\/strong>Taylor claims that in relationships, Character 1 is very concerned with establishing labels (for example, \u201cAre we in a committed relationship or dating casually?\u201d) and the timeline for relationship milestones<\/a> such as marriage, as well as maintaining a predictable dynamic between partners. <\/p>\n\n\n\n

(Shortform note: Taylor implies that this tendency is linked to Character 1\u2019s penchant for boundaries and order. In Attached<\/em><\/a>, Amir Levine and Rachel Heller claim that regardless of what kind of labels and timeline you prefer, the key to a thriving relationship is being able to clearly and honestly communicate those needs. This is what Levine and Heller refer to as communicating like a \u201csecure attacher.\u201d<\/a> For example, if your Character 1 wants reassurance about where a relationship is heading, be assertive about what you want and clearly ask your partner about what their goals are as well.)<\/p>\n\n\n\n

Right-Side Cerebral Cortex\u2014Expansive Thinking<\/strong><\/h2>\n\n\n\n

Taylor explains that the cerebral cortex on the right side of the brain exhibits an expansive and fluid style of thinking that\u2019s focused on the present moment.<\/strong> She says that one way of understanding Character 4 is by imagining our mindset when we first entered the world: We didn\u2019t have language, memories, or a sense of self. We also entered the world aware that we\u2019re made up of the same energy that flows through everything else in the universe\u2014a cosmic consciousness that transcends words, rationalization, or scientific understanding. Unlike Character 1, who thinks in terms of language and focuses on boundaries, Character 4 thinks in pictures and recognizes that everything\u2019s connected.<\/p>\n\n\n\n

Taylor strengthened her connection to Character 4 after her stroke, and while she acknowledges that there\u2019s no easy way to access Character 4, she recommends focusing intently on the experience of the current moment and then channeling all of your mental energy<\/a> into gratitude. <\/p>\n\n\n\n

Accessing the Non-Dualist Character 4 Mindset<\/strong>

Many spiritual leaders describe the Character 4 mindset using the term \u201cnon-duality,\u201d<\/a> or the idea that the universe isn\u2019t made up of individual entities but rather one indivisible whole. Various spiritual traditions, including Hinduism and Buddhism, refer to the non-dualist perspective as the key to well-being and happiness<\/a><\/strong>. 

Like Taylor, many writers on this topic assert that non-dualism is a transcendental experience that\u2019s impossible to describe with words. Nonetheless, in The Book<\/em><\/a>, Alan Watts describes the non-dualist philosophy by saying that there aren\u2019t really individual people\u2014rather, each person is a different manifestation of one single Cosmic Being<\/a>. He says that by recognizing their oneness with the universe<\/a>, Westerners can end their chronic feelings of dissatisfaction and alienation. 

So how exactly can you achieve a Character 4 mindset? Similar to Taylor\u2019s advice, some people recommend meditation<\/a> as a way to tap into this kind of expansive thinking. In addition, some people who\u2019ve taken psychedelic drugs<\/a> have reported a transcendental experience of connectedness<\/a> that aligns closely with Taylor\u2019s description of Character 4.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Taking care of your body: <\/strong>Character 4 considers the body sacred. Taylor says that because of this, Character 4 embraces holistic care (including eating well, doing physical activity, and engaging in spiritual practices). She says that Character 4 holds fast to gratitude even during periods of illness. <\/p>\n\n\n\n

(Shortform note: Character 4 would likely opt for holistic care of the body because they understand the connections between everything\u2014how exercise and mental health might be linked, for example. Research supports the idea that exercising has a positive impact on people\u2019s mood, motivation, and self-esteem<\/a>. In addition, because Character 4 perceives everything as part of the same cosmic energy, they would naturally tend toward gratitude rather than dwelling on what\u2019s missing at the individual level. For example, if everyone is part of one cosmic consciousness, there\u2019s no reason to be envious of someone else\u2019s good health, since there isn\u2019t truly an \u201celse.\u201d) <\/p>\n\n\n\n

Workplace: <\/strong>At work, Character 4 excels at visualizing how multiple moving parts fit into the big picture. For example, they might do a great job of putting together a team with complementary skills and coordinating different departments as they work toward a larger goal. Taylor explains that they don\u2019t get bogged down by details or setbacks, and they\u2019re motivated to make the world a better place<\/a> rather than accumulate material goods.\u00a0<\/p>\n\n\n\n

(Shortform note: Taylor implies that these professional strengths result from Character 4\u2019s big-picture style of thinking, which she says is characteristic of the right hemisphere. Character 4\u2019s altruistic motivation in this context is likely linked to their sense of connectedness<\/a> with the rest of the universe, which would foster a more compassionate mindset. In Drive<\/em><\/a>, Daniel H. Pink argues that all<\/em> people are naturally wired to want to help others<\/a> and seek a meaningful purpose for their work that goes beyond material gain. This argument is consistent with Taylor\u2019s assertion that everyone has a Character 4 they can channel if they\u2019re intentional about it.)<\/p>\n\n\n\n

Romance: <\/strong>Taylor says that in romantic partnerships, Character 4 is the sense of groundedness that comes from within rather than from the other person. Because they naturally focus on the positive<\/a> in life, Character 4 is great at connecting with others<\/a>. Taylor also clarifies that although Character 4 is an optimist at heart, they\u2019ll only stay in a relationship long term if the other person is truly present with them and brings positive energy to the dynamic. <\/p>\n\n\n\n

(Shortform note: In Attached<\/em><\/a>, Levine and Heller claim that ending a romantic relationship is difficult because the emotion-driven part of our brain (the limbic system<\/a>, according to Taylor) registers a potential breakup as a source of pain that it instinctively wants to avoid<\/a>\u2014like touching a hot stove. This might explain why Character 4, who dwells in the higher-thinking zone of the cerebral cortex, is good at making decisions about relationships based on what\u2019s best for you in the long term.)<\/p>\n","protected":false},"excerpt":{"rendered":"

What does the cerebral cortex do? What’s the difference between the cerebral cortex’s functions on the left side and the right side of the brain? Jill Bolte Taylor’s book Whole Brain Living describes four characters that help the brain function. Two of these characters (Characters 1 and 4) make up the cerebral cortex. Discover more about the functions of the cerebral cortex and how it forms your thought processes.<\/p>\n","protected":false},"author":14,"featured_media":15312,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[9,160],"tags":[1066],"class_list":["post-105681","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-psychology","category-science","tag-whole-brain-living","","tg-column-two"],"yoast_head":"\nWhat Does the Cerebral Cortex Do? 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