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Systematic Analysis of Pigeons' Discrimination of Pixelated Stimuli : A Hierarchical Pattern Recognition System Is Not Identifiable

Systematic Analysis of Pigeons' Discrimination of Pixelated Stimuli : A Hierarchical Pattern Recognition System Is Not Identifiable

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DELIUS, Juan D., Julia A. M. DELIUS, 2019. Systematic Analysis of Pigeons' Discrimination of Pixelated Stimuli : A Hierarchical Pattern Recognition System Is Not Identifiable. In: Scientific Reports. 9(1), 13929. eISSN 2045-2322. Available under: doi: 10.1038/s41598-019-50212-1

@article{Delius2019-09-26Syste-47095, title={Systematic Analysis of Pigeons' Discrimination of Pixelated Stimuli : A Hierarchical Pattern Recognition System Is Not Identifiable}, year={2019}, doi={10.1038/s41598-019-50212-1}, number={1}, volume={9}, journal={Scientific Reports}, author={Delius, Juan D. and Delius, Julia A. M.}, note={Preprint of paper published in 2019 in Scientific Reports ; Link to published version in KOPS: http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1o5lh5bt6fh8q7 Article Number: 13929} }

<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:void="http://rdfs.org/ns/void#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/47095"> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/43"/> <dc:rights>terms-of-use</dc:rights> <dc:creator>Delius, Juan D.</dc:creator> <dcterms:rights rdf:resource="https://kops.uni-konstanz.de/page/termsofuse"/> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/47095"/> <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/47095/1/Delius_2-bdpkbl6m96nj3.pdf"/> <dcterms:title>Systematic Analysis of Pigeons' Discrimination of Pixelated Stimuli : A Hierarchical Pattern Recognition System Is Not Identifiable</dcterms:title> <dc:language>eng</dc:language> <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/47095/1/Delius_2-bdpkbl6m96nj3.pdf"/> <dcterms:abstract xml:lang="eng">Pigeons learned to discriminate two different patterns displayed with miniature light-emitting diode arrays. They were then tested with 84 interspersed, non-reinforced degraded pattern pairs. Choices ranged between 100% and 50% for one or other of the patterns. Stimuli consisting of few pixels yielded low choice scores whereas those consisting of many pixels yielded a broad range of scores. Those patterns with a high number of pixels coinciding with those of the rewarded training stimulus were preferred and those with a high number of pixels coinciding with the non-rewarded training pattern were avoided; a discrimination index based on this correlated 0.74 with the pattern choices. Pixels common to both training patterns had a minimal influence. A pixel-by-pixel analysis revealed that eight pixels of one pattern and six pixels of the other pattern played a prominent role in the pigeons' choices. These pixels were disposed in four and two clusters of neighbouring locations. A summary index calculated on this basis still only yielded a weak 0.73 correlation. The individual pigeons' data furthermore showed that these clusters were a mere averaging mirage. The pigeons' performance depends on deep learning in a midbrain-based multimillion synapse neuronal network. Pixelated visual patterns should be helpful when simulating perception of patterns with artificial networks.</dcterms:abstract> <dc:contributor>Delius, Julia A. M.</dc:contributor> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2019-10-01T12:15:06Z</dc:date> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2019-10-01T12:15:06Z</dcterms:available> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/43"/> <dcterms:issued>2019-09-26</dcterms:issued> <dc:contributor>Delius, Juan D.</dc:contributor> <dc:creator>Delius, Julia A. M.</dc:creator> </rdf:Description> </rdf:RDF>

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