polypeptides, 82
serotonin, 79-80
neurotrophin, 122
Newton, Isaac, 20, 38, 258, 263
Nicot, Jean, 101
Nicotiana, 101
Nicotiana tabacum, 92, 101f
nicotine, 92,93,96,101
nodes of Ranvier, 58f, 58-59
noncovalent, hydrogen bonding, 29
nondeclarative memory, 227
non-rapid eye movement (NREM), sleep, 235-36, 238, 240
nootropic, 224
norepinephrine, 27, 77, 80, 109
NT3 (neurotrophin-3), 122
nuclear magnetic resonance (NMR), 199-200
nuclear spin, 199
nucleic acids, 35-36
nucleotides, 35-36, 42, 44-46
nucleus accumbens, 247, 248f, 249f
nucleus solitarius, 153, 153f
occipital lobe, 11f
Oersted, Hans Christian, 16
Olds, James, 247-48
oleic acid, 31
olfactory bulbs, 11f
olfactory receptors, G-protein-coupled receptors (GPCRs), 137-39, 142, 144
olfactory sensory perception, 136-38
anosmias, 143-44
black pepper, 139-41
cardamom, 139
cinnamon, 139