. Dementia praecox and paraphrenia . oll on tothe table a hundred times. In the same category therebelong also twitching movements in different groups ofmuscles, raising a shoulder, contortionist movements,waving with the hands, touching definite parts of their bodieswith their fingers, conspicuous clearing of their throats,smacking of their lips, snorting. A patient who alwaystwitched with his alae nasi, explained, That is just my way. 44 DEMENTIA PR^ECOX Sometimes the whole \olitional expression of the patientis dominated by stereotypies for a long time, so that hisdoings resolve themselves
. Dementia praecox and paraphrenia . oll on tothe table a hundred times. In the same category therebelong also twitching movements in different groups ofmuscles, raising a shoulder, contortionist movements,waving with the hands, touching definite parts of their bodieswith their fingers, conspicuous clearing of their throats,smacking of their lips, snorting. A patient who alwaystwitched with his alae nasi, explained, That is just my way. 44 DEMENTIA PR^ECOX Sometimes the whole \olitional expression of the patientis dominated by stereotypies for a long time, so that hisdoings resolve themselves into an almost uninterrupted seriesof senseless movements which are either monotonous, orrepeat themselves with slight changes. A certain rhythviinvariably results. The patients rock themselves from oneleg on to the other, keep time, pull letters away from theirfingertips, spread out their fingers with a quavering move-ment, clap their hands, shake their heads, bellow keepingtime, give themselves boxes on their ears, run up and down. Fig 7. Hair-pulling patient. in double quick time. About the motives for theseproceedings, no satisfactory account is got from them. Apatient who always rocked himself rhythmically from side toside, simply explained, It happens so in me, I mustshake my head or else I am in terror, I must constantlysay things, I must scream without wanting to, there isthat impulse in me, I must throw myself about at night inbed as if a strange power threw me, I must turn round,as when a magnet draws a needle, I could not have restedtill I had done that. are similar expressions. PSYCHIC SYMPTOMS 45 We may well suppose that also the development of suchstereotypies, which later give such a peculiar appearance tothe terminal states of the disease and likewise to many formsof idiocy, is specially favoured by the failure of healthyvolitional impulses, perhaps first made possible. Man\-experiences at least indicate that the mechanism of our willpossesses arrangements acqui
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