The left brain refers to the left cerebral hemisphere of the brain, which is responsible for controlling various cognitive functions and language processing in most individuals. It is associated with logical thinking, analytical reasoning, and problem-solving abilities.

The left brain is primarily responsible for performing the following functions:

• Language comprehension and production
• Mathematical calculations
• Logical reasoning and critical thinking
• Details and analytical thinking
• Sequential and organized processing

The left brain is characterized by:

1. Analytical thinking
2. Linear and logical thought processes
3. Fact-oriented approach
4. Attention to details
5. Structured and organized thinking

Left brain dominance refers to the phenomenon where an individual tends to rely more on their left hemisphere for cognitive functions and exhibits traits associated with left-brained thinking.