Examples are generally described that include monitoring an electrocaloric effect device. The card comprises a substrate having a lenticular portion on a front side and a flat portion on a back side. This is particularly useful in treating diseases dymyelinating diseases such as diabetic neuropathy, Guillain-Barr Syndrome, chronic demyelinating disease, acute demyelinating polyneuropathy and human immunodeficiency viral demyelinating neuropathy or demyelination caused by trauma.