{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:N26V5FDNOGDXIJOJ5E2C425WT6","short_pith_number":"pith:N26V5FDN","schema_version":"1.0","canonical_sha256":"6ebd5e946d71877425c9e9342e6bb69fab57ddf3613c0cd22d60968fbeb97df4","source":{"kind":"arxiv","id":"1501.05068","version":1},"attestation_state":"computed","paper":{"title":"Difficulties applying recent blind source separation techniques to EEG and MEG","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.med-ph","stat.ML"],"primary_cat":"physics.data-an","authors_text":"Kevin H. Knuth","submitted_at":"2015-01-21T06:17:50Z","abstract_excerpt":"High temporal resolution measurements of human brain activity can be performed by recording the electric potentials on the scalp surface (electroencephalography, EEG), or by recording the magnetic fields near the surface of the head (magnetoencephalography, MEG). The analysis of the data is problematic due to the fact that multiple neural generators may be simultaneously active and the potentials and magnetic fields from these sources are superimposed on the detectors. It is highly desirable to un-mix the data into signals representing the behaviors of the original individual generators. This "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1501.05068","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2015-01-21T06:17:50Z","cross_cats_sorted":["physics.med-ph","stat.ML"],"title_canon_sha256":"5b1ed2ad8ceec495166301f8d5a732c3eb485a9ef4f4e74965c913f5b959a495","abstract_canon_sha256":"8d7524fb8e987721eef4df3e157c8d398128dd4fe9ae3332cdd597cebc3ee8d5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:29:00.822354Z","signature_b64":"7MMODRaML/qZqPR2ooeKKB1jFljj4gs/I6R03E2eAgk2Vmg0Ohc89l4PQPtoghk5mO2TukQcT0/q5u8goGriCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6ebd5e946d71877425c9e9342e6bb69fab57ddf3613c0cd22d60968fbeb97df4","last_reissued_at":"2026-05-18T02:29:00.821951Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:29:00.821951Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Difficulties applying recent blind source separation techniques to EEG and MEG","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.med-ph","stat.ML"],"primary_cat":"physics.data-an","authors_text":"Kevin H. Knuth","submitted_at":"2015-01-21T06:17:50Z","abstract_excerpt":"High temporal resolution measurements of human brain activity can be performed by recording the electric potentials on the scalp surface (electroencephalography, EEG), or by recording the magnetic fields near the surface of the head (magnetoencephalography, MEG). The analysis of the data is problematic due to the fact that multiple neural generators may be simultaneously active and the potentials and magnetic fields from these sources are superimposed on the detectors. It is highly desirable to un-mix the data into signals representing the behaviors of the original individual generators. This "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.05068","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1501.05068","created_at":"2026-05-18T02:29:00.822015+00:00"},{"alias_kind":"arxiv_version","alias_value":"1501.05068v1","created_at":"2026-05-18T02:29:00.822015+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.05068","created_at":"2026-05-18T02:29:00.822015+00:00"},{"alias_kind":"pith_short_12","alias_value":"N26V5FDNOGDX","created_at":"2026-05-18T12:29:32.376354+00:00"},{"alias_kind":"pith_short_16","alias_value":"N26V5FDNOGDXIJOJ","created_at":"2026-05-18T12:29:32.376354+00:00"},{"alias_kind":"pith_short_8","alias_value":"N26V5FDN","created_at":"2026-05-18T12:29:32.376354+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/N26V5FDNOGDXIJOJ5E2C425WT6","json":"https://pith.science/pith/N26V5FDNOGDXIJOJ5E2C425WT6.json","graph_json":"https://pith.science/api/pith-number/N26V5FDNOGDXIJOJ5E2C425WT6/graph.json","events_json":"https://pith.science/api/pith-number/N26V5FDNOGDXIJOJ5E2C425WT6/events.json","paper":"https://pith.science/paper/N26V5FDN"},"agent_actions":{"view_html":"https://pith.science/pith/N26V5FDNOGDXIJOJ5E2C425WT6","download_json":"https://pith.science/pith/N26V5FDNOGDXIJOJ5E2C425WT6.json","view_paper":"https://pith.science/paper/N26V5FDN","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1501.05068&json=true","fetch_graph":"https://pith.science/api/pith-number/N26V5FDNOGDXIJOJ5E2C425WT6/graph.json","fetch_events":"https://pith.science/api/pith-number/N26V5FDNOGDXIJOJ5E2C425WT6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/N26V5FDNOGDXIJOJ5E2C425WT6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/N26V5FDNOGDXIJOJ5E2C425WT6/action/storage_attestation","attest_author":"https://pith.science/pith/N26V5FDNOGDXIJOJ5E2C425WT6/action/author_attestation","sign_citation":"https://pith.science/pith/N26V5FDNOGDXIJOJ5E2C425WT6/action/citation_signature","submit_replication":"https://pith.science/pith/N26V5FDNOGDXIJOJ5E2C425WT6/action/replication_record"}},"created_at":"2026-05-18T02:29:00.822015+00:00","updated_at":"2026-05-18T02:29:00.822015+00:00"}