Spectral Density Maps of Receptive Fields in the Rat's Somatosensory Cortex

As late as the 1950's, the structure of memory storage and the brain processes leading to perception remained enigmatic. Thus Karl Lashley (1950) could exclaim that his lifelong search for an encoded memory trace had been in vain, and Gary Boring (1929) could indicate in his History of Experimental Psychology that little was to be gained, at this stage of knowledge, by psychologists studying brain function.