In this paper, a winnerless competition (WLC) network which consists of nine FitzHugh-Nagumo (FHN) neurons has been introduced to investigate the effect of high-frequency driving on the response of neuron system to a subthreshold low-frequency signal.We show that optimal amplitude of high-frequency driving enhances the response of neuron system to a subthreshold low-frequency input.Further, we also find that vibrational resonance (VR) in the WLC network efficiently improve the spatiotemporal encoding of the WLC network in response to subthreshold low-frequency input.