2004/08/13 by Damián Oliva, D. Oliva, Inés Samengo +9
Biochemistry, Genetics and Molecular Biology · Neuroscience · #Memory and Neural Mechanisms #Neural dynamics and brain function #Neuroscience and Neuropharmacology Research #q-bio.NC
paper · pdf · doi:10.48550/arxiv.q-bio/0408008
25 pages, 7 figures, submitted to Neural Computation
arxiv created 2004/08/13 · arxiv updated 2009/12/01
As subjects perceive the sensory world, different stimuli elicit a number of neural representations. Here, a subjective distance between stimuli is defined, measuring the degree of similarity between the underlying representations. As an example, the subjective distance between different locations in space is calculated from the activity of rodent hippocampal place cells, and lateral septal cells. Such a distance is compared to the real distance, between locations. As the number of sampled neurons increases, the subjective distance shows a tendency to resemble the metrics of real space.