Why might the brain specialize to the point where a single neuron is dedicated to the recognition of a specific object or person?

Write coherently to support a central idea with correct grammar, usage, and mechanics as expected of a
psychology professional.

  Use APA style and format. 
Context 
Recent technologies employed in the study of the brain regions regulating speech are helping scientists better understand the neural basis of human behaviors interacting with the world. For example, MRI imaging studies are revealing other areas within the brain that may also play a role in language and reading. Another example is that both Broca’s and Wernicke’s areas are fundamental to speech ability, but the specific mechanism of how each plays into oral language is still unclear. This is still a new area that challenges psychologists, neurologists, and speech therapists. 
Humans use different parts of their brain to discriminate objects from people. In fact, we may have specialized neurons for recognizing faces. This relates to the main theme of this assessment: vision and visual perception. Many questions about human vision are unanswered. For example, different areas of the brain respond differently to visual recognition tasks, but how and why these areas cooperate to process visual information remains unclear. Another example: The visual cortex contains several layers, the functional roles of which are the subject of intense investigation. Questions include, “Why might the brain specialize to the point where a single neuron is dedicated to the recognition of a specific object or person?” and “What factors or cues do you think would influence how these neurons specialize and what they ultimately respond to?”