brain hemispheres A study published in the journal Brain in September 2013 analyzed Einstein's corpus callosum - a large bundle of fibers that connects the two cerebral hemispheres and facilitates interhemispheric communication in the brain - using a novel technique that allowed for a higher resolution measurement of the fiber thickness. Einstein's corpus callosum was compared to two sample groups: 15 brains of elderly people and 52 brains from people aged 26. Einstein was 26 in 1905, his Annus Mirabilis (Miracle Year). The findings show that Einstein had more extensive connections between certain parts of his cerebral hemispheres compared to both younger and older control group brains. Recovered photographs A study, "The cerebral cortex of Albert Einstein: a description and preliminary analysis of unpublished photographs", was published on November 16, 2012, in the journal Brain. Dean Falk, an evolutionary anthropologist at Florida State University, led the study - which analyzed 14 recently discovered photographs - and described the brain: "Although the overall size and asymmetrical shape of Einstein's brain were normal, the prefrontal, somatosensory, primary motor, parietal, temporal and occipital cortices were extraordinary." There was a fourth ridge (apart from the three normal people have) in Einstein's mid-frontal lobe involved in making plans and working memory. The parietal lobes were markedly asymmetrical and a feature in Einstein's primary motor cortex may have been associated with his musical ability. Another study led by Shanghai-based East China Normal University's Department of Physics, "The Corpus Callosum of Albert Einstein's Brain: Another Clue to His High Intelligence", published in the journal Brain on September 24, 2013, showed a new technique to conduct the study, which is the first to detail Einstein's corpus callosum, the brain's largest bundle of fibers that connects the two cerebral hemispheres and facilitates interhemispheric communication. Einstein's corpus callosum was thicker than those in control groups, possibly indicating better cooperation between the hemispheres. Scientists currently cannot tell how far the unusual features above were innate or how far they were due to Einstein's devoting his life to higher thought. Criticism Publication bias may have influenced published results, which means that results showing differences between Einstein's brain and other brains tend to get published while results showing that in many respects Einstein's brain was like other brains tend to be neglected. Researchers knew which brain was Einstein's and which were controls, allowing possible conscious or unconscious bias and preventing impartial research. Neurologist