"Social scientists are often concerned about the importation of poorly understood concepts from the hard sciences into "softer" fields like anthropology or sociology. In my view, the story of mirror neurons shows that the reverse also happens: scores of brilliant neuroscientists were set to work on entities celebrated and, one might say, partly invented because they allowed neuroscience to relate to social concepts, like imitation, culture, and art. Once it got started, the story was one of mutual seduction. The disenchantment, if it takes place at all, may take years. Will the speculative bubble burst? "

"Based on recent findings from neuroscience we can plausibly deduce that the mirror neurons of the viewer were engaged by these images of others suffering. The appeal was to the public's awakened sense of compassion and revulsion toward graphic depictions of the wholesale violence, barbarity, and torture routinely practiced on these Atlantic voyages. Rediker notes that the images would instantaneously "make the viewer identify and sympathize with the 'injured Africans' on the lower deck of the ship . . ." while also producing a sense of moral outrage (p. 315, Olson, 2008)."

If we knew what made some people vulnerable to the effects of tryptophan depletion, we would be a long way towards understanding depression. We still don't. But it's something to do with serotonin. In some people, in some circumstances, serotonin is the only thing between happiness and despair. No, really. (Neuroskeptic)

Across the board, Hauser says, there are signs that animal evolution passed along some capabilities "and then something dramatic happened, a huge leap that enabled humans to break away. Once symbolic representation happened, if the combinatorial capacity was there, things just took off. Precisely how and when this happened, we may never know." (November-December 2008)

If I were a sociologist of science, I would jump on mirror neurons - they are the perfect object if you want to study a scientific controversy today.

"Now a recent breakthrough by the Cambridge neuroscientist and geneticist Seth Grant may provide a third possibility. In a report published in the June 2008 issue of Nature Neuroscience, Grant and his colleagues analyzed synapses in organisms of increasing evolutionary complexity, from single-celled organisms to vertebrates. They found that more advanced organisms also had more complex synapses, allowing neurons to communicate in more complicated ways." Seed

The picture of agency presented here is one well worth pursuing. Murphy and Brown have not presented us with a view that is defensible, both because it is far too sketchy to be properly assessed, and because many of the claims made will no doubt turn out to be false. However, the general outlines of the view are plausible, and there is a rich research agenda here. Perhaps future work will see some of the details worked out, and the gaps filled. (Neil Levy)

Koenigs, M., Young, L., Adolphs, R., Tranel, D., Cushman, F., Hauser, M., & Damasion, A. (2007). Damage to the prefrontal cortex increases utilitarian moral judgements. Nature.

Is it to be full understanding or nothing? I should think there would be some value in enough understanding to make useful predictions. His position is that a scientific understanding of man is undesirable, but I thinnk there is something very desirable about useful predictions.