What are the two main methods of cortical motor mapping?

The two main methods of cortical motor mapping are direct stimulation and comparative analysis. Direct stimulation involves applying electrical currents to specific regions of the cortex to elicit motor responses, which helps in identifying the functional areas responsible for movement. This method is particularly effective during neurosurgical procedures where real-time mapping is essential for preserving critical functions.

Comparative analysis, on the other hand, involves studying the functional outcomes of the brain regions through various imaging or recording techniques before and after a procedure or injury. This method focuses on analyzing changes in motor function as a response to interventions or the natural evolution of motor capabilities.

Both of these techniques are crucial for understanding the organization of motor functions within the brain, which is essential for effective surgical planning, rehabilitation strategies, and further neurophysiological research. The choices provided consist of methods that either do not pertain to motor mapping or are not widely recognized as established methods within the field.