Drowsiness eliminating device

A drowsiness eliminating device comprising:

• at least one of:
• a first stimulus imparting device group including:
• a first stimulus imparting device provided on a chair such that a tendon of latissimus dorsi of a user of the chair faces when the user sits on the chair and imparting a stimulus to the tendon of latissimus dorsi of the user;
• and
• a second stimulus imparting device provided on the chair facing a first skin portion when the user sits on the chair and imparting a stimulus to the first skin portion of the user which is a skin part covering a skeletal muscle which is a cooperative muscle of the latissimus dorsi and is associated with a first motion illusion induced at a supplementary motor area activated by the stimulus to the tendon of latissimus dorsi;
• and
• a second stimulus imparting device group including:
• a third stimulus imparting device provided on the chair such that a tendon of gluteus medius muscle of the user of the chair faces when the user sits on the chair and imparting a stimulus to the tendon of gluteus medius muscle of the user;
• and
• a fourth stimulus imparting device provided on the chair facing a second skin portion when the user sits on the chair and imparting a stimulus to the second skin portion of the user which is a skin part covering a skeletal muscle which is associated with a second motion illusion induced at a supplementary motor area activated by the stimulus to the tendon of gluteus medius muscle and which is a cooperative muscle of the gluteus medius muscle;
• and
• a drive control device which includes a driving control portion which drive-controls said at least one of the first stimulus imparting device group and the second stimulus imparting device group to impart a stimulus to the user of the chair.