{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Nourski KV"],"funding":["NCRR NIH HHS","NIDCD NIH HHS"],"pagination":["37-50"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC4556541"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["148"],"pubmed_abstract":["High gamma power has become the principal means of assessing auditory cortical activation in human intracranial studies, albeit at the expense of low frequency local field potentials (LFPs). It is unclear whether limiting analyses to high gamma impedes ability of clarifying auditory cortical organization. We compared the two measures obtained from posterolateral superior temporal gyrus (PLST) and evaluated their relative utility in sound categorization. Subjects were neurosurgical patients undergoing invasive monitoring for medically refractory epilepsy. Stimuli (consonant-vowel syllables varying in voicing and place of articulation and control tones) elicited robust evoked potentials and high gamma activity on PLST. LFPs had greater across-subject variability, yet yielded higher classification accuracy, relative to high gamma power. Classification was enhanced by including temporal detail of LFPs and combining LFP and high gamma. We conclude that future studies should consider utilizing both LFP and high gamma when investigating the functional organization of human auditory cortex."],"journal":["Brain and language"],"pubmed_title":["Sound identification in human auditory cortex: Differential contribution of local field potentials and high gamma power as revealed by direct intracranial recordings."],"pmcid":["PMC4556541"],"funding_grant_id":["P50 DC000242","UL1 RR024979","R01-DC04290","R01-DC00657","UL1RR024979","R01-DC008089","R01 DC008089","R01 DC004290","R01 DC000657"],"pubmed_authors":["Howard MA","Kawasaki H","Nourski KV","Steinschneider M","McMurray B","Rhone AE","Oya H"],"additional_accession":[]},"is_claimable":false,"name":"Sound identification in human auditory cortex: Differential contribution of local field potentials and high gamma power as revealed by direct intracranial recordings.","description":"High gamma power has become the principal means of assessing auditory cortical activation in human intracranial studies, albeit at the expense of low frequency local field potentials (LFPs). It is unclear whether limiting analyses to high gamma impedes ability of clarifying auditory cortical organization. We compared the two measures obtained from posterolateral superior temporal gyrus (PLST) and evaluated their relative utility in sound categorization. Subjects were neurosurgical patients undergoing invasive monitoring for medically refractory epilepsy. Stimuli (consonant-vowel syllables varying in voicing and place of articulation and control tones) elicited robust evoked potentials and high gamma activity on PLST. LFPs had greater across-subject variability, yet yielded higher classification accuracy, relative to high gamma power. Classification was enhanced by including temporal detail of LFPs and combining LFP and high gamma. We conclude that future studies should consider utilizing both LFP and high gamma when investigating the functional organization of human auditory cortex.","dates":{"release":"2015-01-01T00:00:00Z","publication":"2015 Sep","modification":"2024-02-15T20:09:49.348Z","creation":"2019-03-27T01:57:38Z"},"accession":"S-EPMC4556541","cross_references":{"pubmed":["25819402"],"doi":["10.1016/j.bandl.2015.03.003"]}}