520 



ELECTRO-PHYSIOLOGY 



Demarcation curreiit, 321 

 Demarcation surface., 337, 352 

 Dissimilation (and assimilation) of living 



matter, 83 



Double myograph, 175 

 Double refraction of mnscle, 46 

 Duration of current, excitatory action, 178 



ECHINUS, electrical excitation of muscles, 

 238 



Electricity, action on muscle, 174 tf. ; on 

 protozoa, 299 ff. ; resistance of muscle, 

 200; "general law" of excitation, 

 191 ; influence of direction of current, 

 199, of density, 209, 216 



Electrodes, unpolarisable for muscle, 174 



Electromotive force, measurement, 335 



Electrotouns, polar alterations of excit- 

 ability in muscle, 280 



Epithelial muscles, 10 



Ether, effect on muscle current, 359 ; on 

 action current, 450 ; on gland cur- 

 rents, 473 



Excitability, direct in muscle, 69 ff. ; of 

 different muscles, 57 ff. ; nature at 

 death, 91 ; effect of circulation, 95 ; 

 of temperature, 97 ; of fatigue, 83 ff. ; 

 of the galvanic current, 276 ff. ; of 

 transverse section, 227 ; of desiccation, 

 429 ; of glycerin, 432 ; of chemical 

 substances, 104 



Excitation of muscle by its own current, 

 326 ; secondary, muscle to muscle, 

 427 



Excitatory wave, in muscle, 373 ; relation 

 to contraction wave, 376 



FALL rheotome, 353, 385 



Fatigue in muscle, 83 ; local, by current, 



223 



Flagellata, electrical excitation, 307, 308 

 Freezing of muscle, 103 

 Frog's skin, electromotive action, 462 ff. 



GALVANIC current. See constant current 

 Galvanic resistance to conductivity in 



muscle, 200 



Galvanotropism in protozoa, 307 

 Gastrocuemius muscle, electromotive action, 



325 



Glands, electromotive action, 461 ff. 

 Glycerin, action on muscle, 432 

 Goblet cells, electromotive action, 474 

 Granules, interstitial, in muscle, 30, 33 



HEART, contraction wave, 163 ; excitatory 

 wave, 399 ; absence of current in 

 uninjured state, 343 ; positive varia- 

 tion of demarcation current in vagus 

 excitation, 434 : nature of demarca- 

 tion current 344 ; secondary twitch 



from heart, 396, 420, 427 ; current of 

 action, 397 ; structure of muscle- 

 fibres, 24, 91 ; contraction curve, 

 56 ; strength of stimulus, 70 ; effect 

 of tension, 79 ; electrical excitation, 

 194, 257 



Heat, 93, 339 



Hippocampus float-muscles, structure, 30 



Holothuria muscles, electrical excitation, 

 234 



Hydra, ueuro-muscular cells, 9 



IDIO-MUSCULAR contraction, 152, 172, 205, 

 225, 390 



Inclination current, 325 



Induction currents, action on muscle, 119, 

 179, 181, 218 ; .on protozoa, 299, 305 



Inhibitory manifestations, anodic in muscle, 

 243 ; in intestine, 247 ; in the heart, 

 257 ; in striated muscle, 267 



Initial twitch, 133, 315 ; cardiac, 134 



Innervation, voluntary, 138 ff. 



Insect muscles, structure, 33 ff. ; contrac- 

 tion phenomena, 49 ; distribution of 

 twitch, 64; tetanus, 125, 132 ; fatigue, 

 91 ; propagation of contraction, 155, 

 164 



Interference of excitation between excita- 

 tory and muscle currents, 329 



Intersections, tendinous, 228 



Intestine, electrical excitation, 240, 248 ff. 



KATABOLIC nerves, 433 

 Katelectrotoiius. See electrotonus 

 Kathode, inhibition of conductivity, 295 ; 



excitability, 280, 287 ; physiological, 



212 

 Kiilme's bifurcate experiment, 430 



LATENT period, 56 ; of negative variation, 

 375 ; of muscle elements, 73 ; depend- 

 ence on strength of excitation, 72 ; of 

 opening excitation in muscle, 190 ; 

 dependence on current density, 216 



Leech, electrical excitation of cutaneous 

 muscular integument, 245 ; electro- 

 motive action of skin, 477 



MAN, phasic action current in, 394 ; skin 



current, 393, 513 ; action current of 



heart, 405 

 Microphone, 133 

 Molecular theory, electrical, of muscle, 



347 



Molecules, peripolar, 348 

 Mullusca, adductor muscle, 68, 100, 177. 



187, 2:W 



Mucosa riinvnts, 464 ff. 

 Mncosa, electromotive action in tongue, 



lil 11'. ; throat and cloaca, 473 ff. ; 



stomach, 500 11'. 



