Can animals' survival instincts shed additional light on what we know about human emotion? New York University neuroscientist Joseph LeDoux poses this question in outlining a pioneering theory, drawn from two decades of research, that could lead to a more comprehensive understanding of emotions in both humans and animals.
In his essay, which appears in the journal Neuron, LeDoux proposes shifting scientific focus "from questions about whether emotions that humans consciously feel are also present in other animals and towards questions about the extent to which circuits and corresponding functions that are present in other animals are also present in humans."
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A study involving the analysis of rhesus monkeys’ brains suggests how we may be physiologically wired to focus on emotional stimulus. Researchers injected a dye into the brains of 10 rhesus monkeys which traced individual neurons along the length of their axons. It’s a technique that can highlight physiology in more detail than is possible with current brain imaging technology. Scientists discovered that axons from the amygdala, the emotional center of the brain, converge on a major site believed to be involved with the capacity for attentional focus, the thalamic reticular nucleus. Delete the scoop?
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Stunning new visuals of the brain reveal a deceptively simple pattern of organization in the wiring of this complex organ.
With the global structure of brain region-t0-region communication mapped out, and revealing a simplistic structure, the potential to understand what goes wrong in brain injury should be aided greatly. These crude maps, for the moment, should at least give us a refreshing view on how the different regions might function together.
I can't wait to see what new angles in research come out of this connectome project. Delete the scoop?
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