Determined by the type of receptor activated. Stimuli from two different locations travel along separate pathways and are sent to different parts of the brain . Area innervated by a single sensory neuron.
More sensitive areas have smaller receptive fields and a higher density of receptors.
Sensory pathways involve a series of neurons ascending to the cerebral cortex. Subdivisions of the motor division. Somatic motor neurons. Innervate skeletal muscle. Autonomic motor neurons.