' 994 



II WIMSIIOK ()!• PHYSIOLOGY 



MI I«i|'llVSI(II.OGY III 



eye movements, 1 10a 

 hemiballism, 866, 879, 880 

 hippocampus in, 1374, 1391-1394 

 I luntington's chorea, 875 

 hypothalamic lesions 



behavior and, 1535 

 lesions 



simulating thalamic animal, 790 

 medullary pyramid 



lesions of, 822 

 mesencephalic, behavior, 915 

 micturition, 12 18 

 motor cortex in, 800-803 

 nucleus lateropolaris 



stimulation, 884 

 nucleus niger 



lesions in, 886 

 nucleus ruber, 888 



destruction, 890 



upper and lower syndrome, 889 

 nucleus suhthalamicus, 879 

 nucleus ventro-oralis anterior 



stimulation, 884 

 nucleus ventro-oralis internus 



stimulation, 884 

 pallidum 



lesions in, 877 



stimulation, 877 

 Paranaud's syndrome, 1101 

 posture 



adjustments in, 1078 



maintenance of, 1074 



upright position, 905 

 pyridoxine deficiency in, 1901 

 respiratory arrest, 1351 

 riboflavin deficiency in man, 1899 

 second somatic area in, 810 

 spinal paths of bladder control, 1222 

 supplementary motor areas, 809 

 thalamic nuclei, stimulation, 883 

 thiamine deficiency in, 1898 

 Manganese 



deficiency, neural function and, 1896 

 Manipulation 



definition, 1679 

 Mai supials 



motoi coi tex in, 799 

 Mass reflex 



di CI iption, 783 

 mei hanism, 783 

 Mastication 

 centi al 1 ontrol, 1 164 

 pyriform cortex and, 1357 

 Matei nal behavior 



lieh.i\ ior, etc. 

 neural lesions and, 1 233 

 Matui ation 



learning and, 1 19a 

 Maxwell's spot 



definition 666 

 Maze learning 

 cortii ,1! i.k to) - in 1 6 



Mechanical energy 



receptor excitation, 123 

 Mechanical pressure 



pre- and postsynaptic potentials and, 



30a 

 Mechanoreceptors, 380-383, 387-426 

 see also Audition ; Ear 

 discharges from, 392 

 in Invertebrates, 380 

 response to thermal stimulation, 454 

 specificity of, 391 

 Medial lemniscal system, 396-409 

 anatomical definition, 396 

 direct bulbocortical pathways, 400 

 direct spinocortical pathways, 400 

 joint receptors projection in, 413 

 modality components, 403 

 path from dorsal column nuclei to 



\ entrobasal complex, 400 

 patterns 



in dorsal column nuclei, 398 



in projection, 397 



in response of neurons, 405 



in thalamic relay nucleus, 3gg 

 physiological properties, 397 

 response, anesthesia and, 406 

 reticular activating system and, 421 

 touch-pressure and, 403 

 Mediobasal forebrain 



model of mechanisms, 1 339 

 Medulla oblongata 



bladder control and, 12 18 

 bulbar relays 



reticular formation and, 745 

 cardiac centers, I 140 

 cardiovascular control, 1 139-1 147 

 cardiovascular discharge, rhythmicity, 



11 1 

 integration of vital regulation, 958 

 pain fibers in, 487, 488 

 pressor and depressor regions, 1 1 jg 



localization, 1 140 



tonic activity, I 139 

 pyramids 



collateral activity of fibers, 306 



lesions in infants. 82a 



section of, 822 

 stimulation, 840 

 1 espii atory centers in, 1 1 1 2 

 speech and, 1715 



spinal vasomotor pathways, descrip- 

 tion, 1141 

 stimulation, vasodilation and vaso- 



1 onsu iction and, 1 153 

 sympathetic vasodilator nerves and, 



1 15a 

 termination ol pyramidal fibers in, 822 

 vagal reflex centers, 1 1 22 

 vasomotor neurons 



1 .11 bon dioxide tension, 1 1 \>< 



oxygen tension, 1 1 |6 



vasomotor reflexes 



description, 1 141-1 146 

 efferent pathways, 1145 

 vasoconstrictor tone and, 1 146 

 Medullary pyramids: ret Medulla oblong- 

 ata, pyramids 

 Medullated fibers: ret Nerve fibers, 



myelinated 

 Membrane action potential: tee Action 



potential 

 Membrane' current 



space and time- patterns of. 104 

 temporal relation to action potential. 

 104 

 Membrane potential 



action potential and, 95, 100 

 constant inward current and, 1 12 

 definition, 102 



graded responsiveness and, 168 

 long polarizing currents and, 1 12 

 membrane current and, 93 

 membrane resistance and, 89, 103 

 postsynaptic potential and, 161 

 rate of accommodation and, 1 2~ 

 sodium potential, 168 

 space and time patterns of, 104 

 spatial distribution 



action potential and, [03 

 threshold, 94 



stimulus duration and, 96 

 transducer action of synaptic mem- 

 brane and, 156 

 true- refractory period and, 309 

 variation with brief voltage pulse, 100 

 Membranes 

 electrogenic evolution, 165 



esc liable and mcxcit.ible, 154, 155 



impedance during activity, 90 



permeability at receptors, 143 



resistance and after-potential, 1 15 

 Mi mory 



amygdaloid stimulation. [406 



mechanism, 1946 



nature of, 1675-1676 



Papez circle and, 1 74 2 



psychosomatics and, 1742 



transfer of traces, 1675-1676 

 Mental work 



cerebral metabolic rate and, 1755 



muscle tone and, 1676 

 Menthol 



cold sensation due to, 455 

 Mephanesin 



BEG arousal and, 1 191 1 

 Mephentermine 



central nervous system metabolism and, 

 i860 

 Meprobamate 



Mi. and, 917 

 \lr M aline 



central nervous system metabolism in 

 vitro, 1839 



Voltui 1 ■ 1o Volume II p ' 1 1" Volume III : pagei it 11 



