1. Signal Transmission: They transmit electrical signals over long distances within the CNS, enabling communication between different brain regions and the spinal cord. 2. Motor Control: Projection neurons in the motor cortex send signals to the spinal cord to initiate and control voluntary movements. 3. Sensory Processing: Sensory projection neurons relay information from sensory receptors to higher brain centers for processing and interpretation. 4. Cognitive Functions: In the cerebral cortex, projection neurons are involved in complex cognitive functions such as learning, memory, and decision-making.
