106 The Physiology of Sense Organs 



Katz, i8, 24-26, 36, 38, 41, 49, 52, 



58,76 

 Kennedy, 37, 83, 86 

 KUFFLER, 31, 32, 47 



Limulus, compound eye of, 15, 22, 



66-67 

 Local response of nerve, origin, 21 



influence on spike frequency, 42-48 

 Local subthreshold activity of nerve, 



19-21 

 loewenstein, 54, 57, 89 



MacNichol, 53 



Magnesium, effect on receptor poten- 

 tial, 73 

 Mantegazzini, 43, 47, 49, 51 

 Matthews, io, 15 

 Mechanoreceptor, Pacinian corpuscle, 



54-57 

 Mellon, 16, 83, 86, 91, 92 

 Membrane, capacitance, 5 



refractory states of, 9 



resistance, 5 



resting potential, 7 



time constant, 42 

 Mendelson, 54, 57, 

 Mesentery, sensory endings in, 54 

 Monopolar neuron, 84 

 MORITA, 35 

 Mormyridae, 74 



Muscle receptor organs, of Crustacea, 

 29-32 



of vertebrates, 23 

 Myelination of peripheral nerve fibers, 

 23 



Nernst equation, 7 



Noctuid moths, acoustic organs of, 11 



Novocaine, effect on crustacean 



MRO's, 31 

 Nudibranch mollusc, photosensory 



response in, 37 



Orthodromic impulses, initiation 



point, 80-83 

 Ottoson, 80 



Pacinian corpuscle, 27 

 Phasic sensory neurons, 16 

 Phormia, taste receptors in, 90-93 

 water receptor, 16 



Photoreceptor adaptation, 60, 63 

 Potassium, intracellular concentration, 

 6 

 electrochemical equilibrium poten- 

 tial of, 8 

 membrane permeability to, 6 

 Preston, 37 



Procaine, action on frog muscle 

 spindle, 25 



Ranvier, node of, 84 

 Rathkamp, 89 



Receptor potential, definition of, 39 

 Receptor threshold, 10 

 Refractoriness, of local response, 27 

 influence on impulse frequency, 



44-51 

 Retinula cells, of Limulus, 22 

 Rhabdom of Limulus ommatidium, 



68 

 Roeder, 13 



RUSHTON, 3, 63, 67 



Sato, 28 



Scallop, photosensory neurons of, 34 

 Sciatic nerve, of cat, 23 

 Sherrington, 12 



Sixth abdominal ganglion, photo- 

 sensory neurons in, 37, 39 

 Skogland, 38 

 Sodium, activation, 6 



conductance increase to, 9 

 electrochemical equilibrium poten- 

 tial of, 8 

 inactivation, 6, 9 

 membrane permeability to, 7 

 relative concentration across mem- 

 brane, 6 

 importance for receptor poten- 

 tial, 74 

 Soma, as integrator of receptor cur- 

 rents, 79 

 Space constant, of nerve, 5, 33 

 Spisula, photosensory nerve cells of, 



35 

 Squid photoreceptors, 93-95 

 Stemo-cutaneous muscle, of frog, 10, 

 Stimulus energy, range, 10 

 Stimulus transformation, 12, 15 

 Stretch receptor, of frog, 14 



of crustaceans, 12 

 Stretch-sensitive nerve cells, 10 



