| Similarity | Rank | |
|---|---|---|
| serotonin | 0.861 | 59388 |
| neurotransmitter | 0.838 | 51284 |
| glutamate | 0.803 | 85465 |
| cortisol | 0.699 | 61115 |
| oxytocin | 0.695 | 71128 |
| neuron | 0.686 | 8698 |
| the_brain | 0.683 | 2459 |
| cannabinoid | 0.672 | 91163 |
| the_hippocampus | 0.668 | 66791 |
| neuronal | 0.667 | 71428 |
| ion_channel | 0.661 | 79248 |
| synapse | 0.659 | 31235 |
| melatonin | 0.658 | 64514 |
| nerve_cell | 0.656 | 44534 |
| brain_function | 0.655 | 40259 |
| receptor | 0.654 | 11858 |
| astrocyte | 0.654 | 63323 |
| brain_activity | 0.647 | 62315 |
| the_central_nervous_system | 0.647 | 30904 |
| Gaba | 0.646 | 86229 |
| the_cerebellum | 0.645 | 83659 |
| brain_cell | 0.643 | 47809 |
| nitric_oxide | 0.639 | 68359 |
| hippocampus | 0.634 | 95024 |
| testosterone | 0.631 | 32561 |