Tracking Feline Memories On The Move:
When a cat steps over an obstacle with its front legs, how do its hind legs know what to do? A new study in Current Biology reveals that it is the foreleg stepping movement itself that leaves a lasting impression. By comparison, feline memories of having just seen an obstacle proved rather fleeting. Indeed, the researchers found that cats could remember having stepped over a hurdle for at least ten minutes. The findings suggest that cats' working memories can extend much longer than earlier studies had shown, according to the researchers.
Elephantnose Fish 'See' With Their Chin:
Originating in Central Africa, Peters' elephantnose fish (Gnathonemus petersii), finds its bearings by means of weak electrical fields. Scientists from the University of Bonn have now been able to show how well this works. In complete darkness the animals can even distinguish the material of objects at a distance or dead organisms from living ones. The results have now been published in the Journal of Experimental Biology.
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Claims Of Sex-related Differences In Genetic Association Studies Often Not Properly Validated:
A review of previous research suggests that prominent claims of sex differences of gene-disease associations are often insufficiently documented and validated, according to an article in the August 22/29 issue of JAMA.
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