| NEURON | One of about 100 billion in the human brain |
| STAR | One of at least a hundred billion in the Milky Way |
| ACRE | One of Billion in the U.S. |
| TREE | One of 390 billion in the Amazon rainforest |
| STARS | The Milky Way has around 100 billion of them |
| BRAIN | Containing some 100 billion neurons, an organ forming part of the body's nervous system (5) |
| MILKYWAY | Spiral galaxy containing some 100 billion stars including those in the Beehive, Butterfly, Jewel Box, Pearl, Wild Duck, Wishing Well and White Rose clusters (5,3) |
| LOBE | One of four in the human brain |
| ALPHA | Electromagnetic oscillations in the human brain that occur in the 8-12 Hz frequency range, ... waves |
| GREYMATTER | One of the major components of the human brain (4,6) |
| ATOM | One of about 7 billion billion billion in you |
| CEREBRUM | The largest part of the human brain (8) |
| LEARN | Connectionism is an approach to AI that developed out of attempts to understand how the human brain works-in particular, how people _____ and remember (5) |
| AMYGDALA | A part of the human brain associated with olfaction (8) |
| CATSCAN | Kind of X-ray used to study the human brain: 2 wds., abbr. |
| SHETLANDS | Archipelago of about 100 islands off the north coast of Scotland (9) |
| NEURAL | ____ network, a programme or system in computing that is modelled on the human brain (6) |
| NEURALNET | A computer system modelled on the human brain (6,3) |
| NEURALNETS | Computer systems modeled on the human brain |
| NEURALNETWORK | Computer system modeled on the human brain |
