Now let us try and picture to ourselves a spinal animal, or one which
retains only the lowest portion of the brain, the part known as the
bulb or _medulla oblongata_; let us assume that it is conscious and
capable of acquiring experience through the association and coalescence
of the data afforded by the senses that remain to it; and let us try
to imagine the conscious situations which would arise, and their
value in the guidance of behaviour. The senses that remain are touch
and the temperature sense, the motor sense affording data from the
muscles, joints, and tendons, and those which supply certain visceral
sensations. There is not one of much, if any, guiding value left. There
is not one of what we may term anticipatory use. There is not one
which could serve to infuse anything like definite meaning into the
situation. For, after all, meaning is expectation. There is an element
of anticipation in all those senses which are of any real guiding value
in the conscious situation. Sight, hearing, and, especially for some
animals, smell,--these are the senses which forewarn of something
which may follow; of other sensations with which in the course of
experience they have coalesced. And they are all cut off from the
supposed spinal animal. A light touch might in some cases forewarn
of the shock or severe pressure, which would perhaps follow. But the
shocks would so often come suddenly that it is questionable whether the
warning would be of much avail. Still, touch is a warning and cognitive
sense, and through it the environment would acquire a limited amount of
meaning.
Now, the biological value of coalescent association lies in this
very element of warning. The anticipatory senses, sight, hearing,
smell, are in their several degrees the “projective” senses, the
senses which carry with them the quantity of “outness.” And their
“projective” character is the necessary psychological expression of
their distinctive biological end. They must be projective, must carry
with them “outness,” if they are to convey what we, following Dr.
Stout, have so often spoken of as meaning. But if the biological value
of coalescent association lies in the expectation it renders possible;
and if, in the spinal animal, there are no senses left save touch,
which could receive from the environment preparatory warning of what
is coming; it would seem exceedingly improbable that it should develop
quasi-independent conscious situations of its own. In the unmutilated
animal, at any rate, tactual experience would most probably coalesce
with that derived from the senses which more distinctively take the
lead in the acquisition of meaning. And we may therefore, on these
grounds, as well as on others, acquiesce in the current view that the
quasi-independent functioning of the spinal cord and its constituent
segments is, at best, lit up with those flashes of mere sentience of
which Sir Michael Foster speaks in the passage we quoted in an earlier
section.[196]
Public-domain text, read in full here on John Shaqi.
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