Document Detail

The information content of receptive fields.
MedLine Citation:
PMID:  14622585     Owner:  NLM     Status:  MEDLINE    
The nervous system must observe a complex world and produce appropriate, sometimes complex, behavioral responses. In contrast to this complexity, neural responses are often characterized through very simple descriptions such as receptive fields or tuning curves. Do these characterizations adequately reflect the true dimensionality reduction that takes place in the nervous system, or are they merely convenient oversimplifications? Here we address this question for the target-selective descending neurons (TSDNs) of the dragonfly. Using extracellular multielectrode recordings of a population of TSDNs, we quantify the completeness of the receptive field description of these cells and conclude that the information in independent instantaneous position and velocity receptive fields accounts for 70%-90% of the total information in single spikes. Thus, we demonstrate that this simple receptive field model is close to a complete description of the features in the stimulus that evoke TSDN response.
Thomas L Adelman; William Bialek; Robert M Olberg
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Neuron     Volume:  40     ISSN:  0896-6273     ISO Abbreviation:  Neuron     Publication Date:  2003 Nov 
Date Detail:
Created Date:  2003-11-19     Completed Date:  2004-01-13     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8809320     Medline TA:  Neuron     Country:  United States    
Other Details:
Languages:  eng     Pagination:  823-33     Citation Subset:  IM    
Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA.
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MeSH Terms
Action Potentials / physiology
Brain / cytology,  physiology*
Efferent Pathways / cytology,  physiology
Ganglia, Invertebrate / cytology,  physiology
Insects / cytology,  physiology*
Neurons / physiology
Photic Stimulation
Signal Transduction / physiology
Synaptic Transmission / physiology
Visual Fields / physiology*
Visual Pathways / cytology,  physiology*
Visual Perception / physiology*

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