A humidifier pad made of a plurality of laminated sheets connected together in a stack. The apparatus converts data from a data processing apparatus into bit image data to be reproduced as a visible image by means of using the data converting unit and the reproducing unit, so as to accomplish an efficient system as a whole. The present technology is also generally directed to methods for treating mild brain injury and other neurological disorders in a subject, for example, by administering to the subject an effective amount of a compound comprising ghrelin modified to include octanoic acid or by limiting the carbon 14 content.