Educational psychology . tivity means the capacityto be excited to action at one end by one or many agencies,Conductivity means the capacity to transmit the action thusexcited, or some consequence of it, to the other end of theneurone. Modifiahility means the capacity to change in ac-cordance with use shortly to be described. They are arranged in an elaborate system of receptors,easily accessible to important influences within and without thebody, effectors in intimate connection with organs for action,and connectors which lead from the receptors to the neurone of this total sys
Educational psychology . tivity means the capacityto be excited to action at one end by one or many agencies,Conductivity means the capacity to transmit the action thusexcited, or some consequence of it, to the other end of theneurone. Modifiahility means the capacity to change in ac-cordance with use shortly to be described. They are arranged in an elaborate system of receptors,easily accessible to important influences within and without thebody, effectors in intimate connection with organs for action,and connectors which lead from the receptors to the neurone of this total system has its special connectionswith the outside world, with the other organs of the body, orwith other neurones. the structure of the neurones Figures 4 and 5 show typical neurones, varying widely in shape, but maintaining the common element of a thread-like body suitable to put one part of the animal in touch with other parts—to conduct stimuli from one part of the body to another 14 209 2IO THE ORIGINAL NATURE OF MAN. Fig. 4. A, B, C, and D. Four neurones. The discharging end of D is ROtfully shown, being far beyond the limits of the is after Kolliker [02, p. 834], after is after K6Ilil<er [06, p. 654].C is after Van Gehuchten [00, vol. 2, p. 175].D is after Kolliker [96, p. 349]. THE PHYSIOLOGY OF ORIGINAL TENDENCIES 211educatinalpsych00thor
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