?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Correlations+and+the+encoding+of+information+in+the+nervous+system&rft.creator=Panzeri%2C+S.&rft.creator=Schultz%2C+S.+R.&rft.creator=Treves%2C+A.&rft.creator=Rolls%2C+E.+T.&rft.subject=Computational+Neuroscience&rft.subject=Neural+Modelling&rft.subject=Neurophysiology&rft.description=Is+the+information+transmitted+by+an+ensemble+of+neurons+determined+solely+by+the+number+of+spikes+fired+by+each+cell%2C+or+do+correlations+in+the+emission+of+action+potentials+also+play+a+significant+role%3F+We+derive+a+simple+formula+which+enables+this+question+to+be+answered+rigorously+for+short+timescales.+The+formula+quantifies+the+corrections+to+the+instantaneous+information+rate+which+result+from+correlations+in+spike+emission+between+pairs+of+neurons.+The+mutual+information+that+the+ensemble+of+neurons+conveys+about+external+stimuli+can+thus+be+broken+down+into+firing+rate+and+correlation+components.+This+analysis+provides+fundamental+constraints+upon+the+nature+of+information+coding+-+showing+that+over+short+timescales%2C+correlations+cannot+dominate+information+representation%2C+that+stimulus-independent+correlations+may+lead+to+synergy+(where+the+neurons+together+convey+more+information+than+they+would+considered+independently)%2C+but+that+only+certain+combinations+of+the+different+sources+of+correlation+result+in+significant+synergy+rather+than+in+redundancy+or+in+negligible+effects.+This+analysis+leads+to+a+new+quantification+procedure+which+is+directly+applicable+to+simultaneous+multiple+neuron+recordings.&rft.date=1999&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F115%2F1%2Fcorrinfo.html&rft.identifier=++Panzeri%2C+S.+and+Schultz%2C+S.+R.+and+Treves%2C+A.+and+Rolls%2C+E.+T.++(1999)+Correlations+and+the+encoding+of+information+in+the+nervous+system.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F115%2F<script src='//archive-bar.soton.ac.uk/archive-bar.js'></script>