Laminar differences in response to simple and spectro-temporally complex sounds in the primary auditory cortex of ketamine-anesthetized gerbils
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{"title"=>"Laminar differences in response to simple and spectro-temporally complex sounds in the primary auditory cortex of ketamine-anesthetized gerbils", "type"=>"journal", "authors"=>[{"first_name"=>"Markus K.", "last_name"=>"Schaefer", "scopus_author_id"=>"56530193800"}, {"first_name"=>"Manfred", "last_name"=>"Kössl", "scopus_author_id"=>"7003975289"}, {"first_name"=>"Julio C.", "last_name"=>"Hechavarría", "scopus_author_id"=>"49961443200"}], "year"=>2017, "source"=>"PLoS ONE", "identifiers"=>{"pmid"=>"28771568", "scopus"=>"2-s2.0-85026769218", "sgr"=>"85026769218", "doi"=>"10.1371/journal.pone.0182514", "pui"=>"617642122", "issn"=>"19326203", "isbn"=>"1111111111"}, "id"=>"8c38ca42-81d8-3a11-b862-6b45876d417f", "abstract"=>"In mammals, acoustic communication plays an important role during social behaviors. Despite their ethological relevance, the mechanisms by which the auditory cortex represents different communication call properties remain elusive. Recent studies have pointed out that communication-sound encoding could be based on discharge patterns of neuronal populations. Following this idea, we investigated whether the activity of local neuronal networks, such as those occurring within individual cortical columns, is sufficient for distinguishing between sounds that differed in their spectro-temporal properties. To accomplish this aim, we analyzed simple pure-tone and complex communication call elicited multi-unit activity (MUA) as well as local field potentials (LFP), and current source density (CSD) waveforms at the single-layer and columnar level from the primary auditory cortex of anesthetized Mongolian gerbils. Multi-dimensional scaling analysis was used to evaluate the degree of \"call-specificity\" in the evoked activity. The results showed that whole laminar profiles segregated 1.8-2.6 times better across calls than single-layer activity. Also, laminar LFP and CSD profiles segregated better than MUA profiles. Significant differences between CSD profiles evoked by different sounds were more pronounced at mid and late latencies in the granular and infragranular layers and these differences were based on the absence and/or presence of current sinks and on sink timing. The stimulus-specific activity patterns observed within cortical columns suggests that the joint activity of local cortical populations (as local as single columns) could indeed be important for encoding sounds that differ in their acoustic attributes.", "link"=>"http://www.mendeley.com/research/laminar-differences-response-simple-spectrotemporally-complex-sounds-primary-auditory-cortex-ketamin", "reader_count"=>8, "reader_count_by_academic_status"=>{"Researcher"=>2, "Student > Ph. D. Student"=>2, "Other"=>1, "Student > Bachelor"=>2, "Professor"=>1}, "reader_count_by_user_role"=>{"Researcher"=>2, "Student > Ph. D. Student"=>2, "Other"=>1, "Student > Bachelor"=>2, "Professor"=>1}, "reader_count_by_subject_area"=>{"Engineering"=>1, "Agricultural and Biological Sciences"=>4, "Neuroscience"=>3}, "reader_count_by_subdiscipline"=>{"Engineering"=>{"Engineering"=>1}, "Neuroscience"=>{"Neuroscience"=>3}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>4}}, "group_count"=>0}

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