Professor Falk's team scanned all 21 skulls into a computer and then created a "virtual endocast" using specialist software.
Then, they used statistical techniques to study shape differences between the brain casts and to classify them into two different groups: one microcephalic, the other normal.
The dwarf's brain fell into the microcephalic category, while the Hobbit brain fell into the normal group - despite its small size.
In other ways, however, the Hobbit brain is unique, which is consistent with its attribution to a new species.
A previous study of LB1's endocast revealed that large parts of the frontal lobe and other anatomical features were consistent with higher cognitive processes.
"LB1 has a highly evolved brain," said Professor Falk. "It didn't get bigger, it got rewired and reorganised, and that's very interesting."
