[Problem] To prolong the effect of awakening support. A wake-up assistance device according to an embodiment, a detection unit that detects a drowsiness level of a driver of a mobile body, and a determination that determines whether or not wake-up assistance for the driver is necessary based on the drowsiness level. And a control unit that applies a vibration stimulus to the driver by vibrating a vibration applying unit provided in a seat on which the driver sits, when the awakening support is determined to be necessary by the determination unit. , Is provided. When the control unit vibrates the vibration imparting unit, at least a part of the time zone has a vibration waveform having a first frequency that promotes muscle tone and a vibration waveform having a second frequency that suppresses muscle tone. The vibration applying section is vibrated on the basis of the vibration waveform of the superposed shapes. [Selection diagram] Fig. 5【課題】覚醒支援の効果を長続きさせる。【解決手段】実施形態にかかる覚醒支援装置は、移動体の運転者の眠気レベルを検出する検出部と、前記眠気レベルに基いて、前記運転者の覚醒支援が必要か否かを判定する判定部と、前記判定部によって前記覚醒支援が必要と判定された場合に、前記運転者が着座する座席に設けられた振動付与部を振動させることで前記運転者に振動刺激を付与する制御部と、を備える。前記制御部は、前記振動付与部を振動させる場合に、少なくとも一部の時間帯は、筋緊張を促進する第１の周波数による振動波形と、筋緊張を抑制する第２の周波数による振動波形と、を重畳した形の振動波形に基いて前記振動付与部を振動させる。【選択図】図５
