spin, quantum, 199
spinal cord, 9-13, 73-75, 88, 118, 188, 193, 219, 236
spiral ganglion, 182
split-brain patient, 213-16, 214f
SQUID (superconducting quantum interference device), 204
Stevia rebaudiana, 151
steviol, 151-52
stevioside, 151-52
stroke, 197
substantia nigra, 81f
sucralose, 151
sucrose, 149
sugar, 149
suprachiasmatic nucleus (SCN), 233-35
sweet taste, 149-52
aspartame, 151
receptor proteins, 149-50
saccharin, 150-51
steviol and stevioside, 151, 152
sucralose, 151
sugar, 149
sympathetic ganglia, 74-75
sympatholytic, 76
sympathomimetic, 76
synapse, 61, 122-23
synaptic cleft, 61, 63f
synaptogenesis, 117-18
synesthesia, 221-22
Tabernanthe iboga, 112
tactile perception, 215
taste
bitter, 149