Sound Mind: Or, Contributions to the natural history and physiology of the human intellectHaslam, John
Science
Sound Mind: Or, Contributions to the natural history and physiology of the human intellect
Haslam, John
Intellect; Mental health
paralytic: the will to move remains perfect; but the organs to be acted
on are insensible to that influence which, in a sound state, excited
them to motion. As in the healthy state the will has the power to
produce motion, so it is also competent to prevent it; therefore to
move or to abstain from motion, are equally the dictates of the will.
But it not unfrequently happens, when we intend to thread a needle, to
write our name, or to perform some surgical operation, that the will
exerts all its influence to keep the hand steady for the due performance
of these necessary acts; yet, notwithstanding these implicit commands,
the hand continues to move in all directions, but those which could
accomplish the object. So, that these muscles, ordinarily voluntary,
become, in a certain degree, converted into involuntary muscles. A
higher degree of this state prevails in the affection called St. Vitus'
Dance, and likewise in some convulsive symptoms attendant on locked
jaw, where the body is drawn with incredible violence. It may be
noticed, that these states are attended with consciousness.
Concerning the nature of this influence, termed the _will_, a great
variety of discordant opinions prevail. To enumerate or refute these
would be unprofitable labour, more especially as the majority are the
mere assumptions of their particular authors. They all, however, seem to
be agreed that the will is an inherent faculty, or component part of the
mind; and some are induced to consider it as holding the highest office
in the department of intellect. The only mode of investigating this
subject satisfactorily, according to my own views, is to trace the
progress of volition from its feeble commencement, to the full exercise
of its important function,--from the dawn to the meridian.
Public-domain text, read in full here on John Shaqi.
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