The Mind and Motility.--We have spoken thus far almost exclusively of painful conditions as relieved by suggestion or mental influence, but disturbance of motor function may also be favorably affected. There are any number of cases on record in which patients who had been utterly unable to walk were restored to motility by a shock. Many such patients have, in the midst of the excitement of a fire, or the scare caused by the presence of a burglar, got up and walked quite as well as ever, though sometimes they have been for years previously confined to bed. The San Francisco earthquake is said to have exerted such an effect on a number of patients, and, while such unusual disturbances cannot often be provided for the cure of these ailments, there can be no doubt at all of the power of a shock to the mind to overcome functional incapacity that has resisted every possible form of treatment. Ailments of this kind, which involve inability of the will to control, or rather to initiate, movements of the body, receive their best explanation on the neuron or neuroglia theory. (See the chapter on the Mechanism of Suggestion.) The central neurons become either quite separated from certain of the peripheral neurons, or at least the connections are not made with that nice adjustment necessary for the proper passage of nerve impulses. The shock communicated to the nervous system by fright is sufficient, however, to restore these connections, and consequently to enable the patient once more to exercise motor functions that have been in abeyance for some time. {87} _Astasia-abasia._--Any one who has had to deal with the cases for which the French have invented the rather impressive Greek name of astasia-abasia--how much better it would be to call the condition simply what we know it to be, nervous inability to stand or walk!--appreciates how almost a miracle is needed to improve them. The incapacity for station or movement to which the disease owes its name is so complete in many cases, and the patients' lack of confidence in self so absolute, that no ordinary remedial measure is capable of doing any good. These cases are usually a severe trial to the patients' friends. Indeed, the patients themselves maintain their nutrition so well and, as a rule, enjoy such good health, or, as has been said, enjoy their bad health so well, that it is for their attendants the physician feels most commiseration. Yet generally he is quite unable to do anything. It is certain, however, that with care and authoritative suggestion there would not need to be an earthquake, or a fire, or even a burglary, as a therapeutic measure in these cases. As a matter of fact, their cure when it occurs is always brought about by some strong mental influence.