Epidural electrical stimulation (EES) has emerged as a promising therapeutic approach for restoring motor function in patients with spinal cord injury (SCI). However, the underlying mechanisms of how EES affects afferent and efferent fiber interactions remain poorly understood. This thesis aims to develop a simple hybrid model that simulates these interactions, characterizing the system's response to various stimulation parameters. The results will be compared with data acquired from epidural implants in SCI patients.