 The light operates, naturally, on the part of the animal which it reaches. The intensity of the light determines the sense of the response whether contractile or expansive, and the place of the response, the part of the body stimulated, determines the...  Behavior of the Lower Organisms - Página 266por Herbert Spencer Jennings - 1906 - 366 páginasVista completa - Acerca de este libro
 | Maurice Parmelee - 1913 - 480 páginas
...other, for the other side lies in its own shade." 2 "Light acts in one way, that is, by its intensity. The light operates, naturally, on the part of the...stimulated, determines the ultimate orientation of the animal."3 "A given portion of an organism stimulated by a given intensity of light will respond, so... | |
 | University of Pennsylvania. Zoological Laboratory - 1905 - 598 páginas
...an organism stimulates at the point on ruhich it Jails," and in proportion to its intensity. * * * The light operates, naturally, on the part of the...determines the ultimate orientation of the animal." (Holt & Lee, 190i, pp. 479-480.) The theory of tropisms as above set forth depends upon the reflex... | |
 | 1908 - 742 páginas
...animal is oriented" (JENNINGS 19063, p. 266). This is also brought out by HOLT and LEE (1901, p. 479), "The light operates, naturally, on the part of the animal which it reaches." Thus, this tropism theory requires that, in order to determine the direction of movement, the stimulus... | |
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