More interesting than this resort to external sources of stimulus, and more significant of emotional instability, are the spontaneous outbursts of excitement common among criminals, curious self-evolved intoxications springing from mysterious and incalculable depths of the organism. Dostoieffsky has studied these outbursts and admirably described them. "A prisoner has lived tranquilly," he tells us,[64] "for several consecutive years, and his conduct has been exemplary. All at once, to the great astonishment of his guardians, he mutinies and recoils before no crime, even murder or rape. Every one is astonished. This unexpected explosion is the anguished, convulsive manifestation of personality, an instinctive melancholy, a desire to affirm the degraded _ego_, an emotion which obscures the judgment. It is like a spasm, an access of epilepsy; the man who is buried alive and who suddenly awakes strikes in despair against his coffin-lid; he strives to push it back, to raise it; his reason convinces him of the uselessness of all his efforts, but reason has nothing to do with his convulsions. It must not be forgotten that nearly every manifestation of the personality of the prisoner is considered a crime; also that the question whether the manifestation is important or insignificant is perfectly indifferent to the prisoner. Risk for risk, it is better to go to the extreme, even to murder. It is only the first step that costs; little by little the man is carried away and can no longer be held in." The prison has much to answer for in the development of these emotional outbreaks, and it is only in prison that there is opportunity of studying them. It would, however, be rash to conclude that they are entirely due to prison conditions. They are in harmony with all that we know of criminal psychology, and it is not alone under prison conditions that they are the causes of crime.
In Germany these periodic explosions (known as _Zuchthaus-Knall_) have been described by Delbrück and Krafft-Ebing. In Italy they have been noted by Lombroso, especially in very hot weather and at such times as epileptic attacks are most frequent, and he regards them as fresh proof of a close relationship between the instinctive criminal and the epileptic. In England they appear to be rare in men, but, on the other hand, common in women who have, in prison language, "broken out." This wild fit of maniacal violence which from time to time seizes on the women confined in prisons, and might almost be regarded as an exaggerated or vicarious form of orgy, has been studied with some care in England. Here as well as abroad it is frequently supposed to be a voluntary insubordination deserving punishment.