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What Are the Most Common Gross Anatomical Variations in the Human Brain?

The human brain can look a little different from person to person. Here are some of the most common ways our brains can vary:

  1. Sylvian Fissure Differences: Up to 30% of people might have a Sylvian fissure that isn’t shaped like usual.

  2. Cerebral Lobe Differences:

    • About 10-15% of people have noticeable differences in the size of their frontal or temporal lobes.
  3. Extra Gyri (Convolutions): Around 5-20% of brains have extra folds in different parts.

  4. Corpus Callosum Differences: About 10% of people might have a smaller or missing corpus callosum, which connects the two sides of the brain.

  5. Differences Between Brain Hemispheres: Research shows that around 20% of people have clear differences in how certain brain functions are spread across the left and right sides.

So, while our brains might all do the same things, they can look a little different along the way!

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What Are the Most Common Gross Anatomical Variations in the Human Brain?

The human brain can look a little different from person to person. Here are some of the most common ways our brains can vary:

  1. Sylvian Fissure Differences: Up to 30% of people might have a Sylvian fissure that isn’t shaped like usual.

  2. Cerebral Lobe Differences:

    • About 10-15% of people have noticeable differences in the size of their frontal or temporal lobes.
  3. Extra Gyri (Convolutions): Around 5-20% of brains have extra folds in different parts.

  4. Corpus Callosum Differences: About 10% of people might have a smaller or missing corpus callosum, which connects the two sides of the brain.

  5. Differences Between Brain Hemispheres: Research shows that around 20% of people have clear differences in how certain brain functions are spread across the left and right sides.

So, while our brains might all do the same things, they can look a little different along the way!

Related articles