Your examples of localised point effects such as speech and Parkinsonian tremor responses to probes don't negate the article's observation that brain functions are distributed, and regions participate in multiple functions.
By way of analogy, you can disable a car sooner or later by breaking the ignition switch or the gas tank lid. But those points are not alone responsible for the transportation function of the car.
The wheels of the car are involved with and vital for acceleration, steering, and braking. Without transmission and suspension, wheels do none of this.
The transmission of the car is capable of both propulsion and braking.
To think of speech as a function of a small part of the left side of the brain is incomplete. Speech requires a number of motor, sensory, respiratory and data systems to work together in a coordinated pipeline that exists across the whole brain and body. The neurons involved in those circuits also work to perform other functions.
By way of analogy, you can disable a car sooner or later by breaking the ignition switch or the gas tank lid. But those points are not alone responsible for the transportation function of the car.
The wheels of the car are involved with and vital for acceleration, steering, and braking. Without transmission and suspension, wheels do none of this.
The transmission of the car is capable of both propulsion and braking.
To think of speech as a function of a small part of the left side of the brain is incomplete. Speech requires a number of motor, sensory, respiratory and data systems to work together in a coordinated pipeline that exists across the whole brain and body. The neurons involved in those circuits also work to perform other functions.