Which of the following is NOT a component of the brain used in learning?

The cortex is actually a fundamental part of the brain that plays a critical role in learning and memory. It is involved in various higher-order functions, including perception, cognition, and decision-making. The cerebral cortex processes information from the senses and is vital for tasks that require attention, memory, and reasoning.

In contrast, neurons are the basic building blocks of the brain that transmit signals, axons are long projections of neurons that carry impulses away from the cell body, and dendrites are branching structures that receive messages from other neurons. Each of these components, including the cortex, contributes to the overall process of learning and how information is processed in the brain.