The Journal of laryngology and otology . ch thev can be recognised as two distinct points 308 The Journal of Laryngology, [June, 1905. by the sense of touch, gives us an absolute analogy between thetwo senses. You all know that at a distance of less than 1 or 2mm. two points of contact are felt as one. The distance varies ofcourse, with the region of the skin examined, being most delicateat the tip of the tongue and the tip of the finger. The principle ofmaximum stimulation explains the facts in both cases , so close is the analogy that, supposing the theory which I amputting befo
The Journal of laryngology and otology . ch thev can be recognised as two distinct points 308 The Journal of Laryngology, [June, 1905. by the sense of touch, gives us an absolute analogy between thetwo senses. You all know that at a distance of less than 1 or 2mm. two points of contact are felt as one. The distance varies ofcourse, with the region of the skin examined, being most delicateat the tip of the tongue and the tip of the finger. The principle ofmaximum stimulation explains the facts in both cases , so close is the analogy that, supposing the theory which I amputting before you to be correct, w^e are in a position to explain thefact that analysis of sound is much easier in the middle jDortions ofthe scale than amongst the very high or the very low notes. Now let us proceed to the case in which the pitch of the twonotes is distinguishable even when sounded together. This caseis represented in Fig. 7. Here we find that the line DS is nolonger equal to half the lines AR or BN, and consequently, the Fig. portion of the membrane HJ never, even at its greatest excur-sions, undergoes movements of so great amplitude as the points Rand N. We have, therefore, two points of maximum stinmlationand are aware of two notes. The further apart the notes becomein pitch the more completely are the points of maximum stimula-tion separated and the difference of pitch estimated. In this case the analogy with the sense of touch is obviousand need not detain us at all. It corresponds to the case in whichthe points of the compass are sufficiently far apart to be recognisedas two points. Now let us go a step further and imagine that several notes aresounded together, in such a way that a considerable portion of thebasilar membrane is made to undergo movement, without therebeing any particular point in that section which is subject tomaximum stimulation. Such a state of affairs may be producedby sounding together several notes which are fairly near oneanother in pitc
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Keywords: ., bo, bookcentury1800, booksubjectear, booksubjectnose, bookyear1887
