{"doi":"10.1063/1.4914876","title":"Characteristics of bowl-shaped coils for transcranial magnetic stimulation","abstract":"<jats:p>Transcranial magnetic stimulation (TMS) has recently been used as a method for the treatment of neurological and psychiatric diseases. Daily TMS sessions can provide continuous therapeutic effectiveness, and the installation of TMS systems at patients' homes has been proposed. A figure-eight coil, which is normally used for TMS therapy, induces a highly localized electric field; however, it is challenging to achieve accurate coil positioning above the targeted brain area using this coil. In this paper, a bowl-shaped coil for stimulating a localized but wider area of the brain is proposed. The coil's electromagnetic characteristics were analyzed using finite element methods, and the analysis showed that the bowl-shaped coil induced electric fields in a wider area of the brain model than a figure-eight coil. The expanded distribution of the electric field led to greater robustness of the coil to the coil-positioning error. To improve the efficiency of the coil, the relationship between individual coil design parameters and the resulting coil characteristics was numerically analyzed. It was concluded that lengthening the outer spherical radius and narrowing the width of the coil were effective methods for obtaining a more effective and more uniform distribution of the electric field.</jats:p>","journal":"Journal of Applied Physics","year":2015,"id":38454,"datarank":0.44509590406267185,"base_score":2.1972245773362196,"endowment":2.1972245773362196,"self_citation_contribution":0.32958368660043297,"citation_network_contribution":0.11551221746223891,"self_endowment_contribution":0.32958368660043297,"citer_contribution":0.11551221746223891,"corpus_percentile":null,"corpus_rank":null,"citation_count":8,"citer_count":5,"citers_with_citation_signal":4,"citers_with_endowment":4,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":190730,"name":"Momoko Suyama","orcid":null,"position":1,"is_corresponding":false},{"id":190731,"name":"Yoshihiro Takiyama","orcid":null,"position":2,"is_corresponding":false},{"id":190732,"name":"Dongmin Kim","orcid":null,"position":3,"is_corresponding":false},{"id":190733,"name":"Youichi Saitoh","orcid":null,"position":4,"is_corresponding":false},{"id":190734,"name":"Masaki Sekino","orcid":null,"position":5,"is_corresponding":false},{"id":190729,"name":"Keita Yamamoto","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"base_score":2.1972245773362196,"endowment":2.1972245773362196,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"18998881","pmcid":null,"openalex_id":"https://openalex.org/W1975610155","authors":[],"funders":[{"funder_name":"Ministry of Education, Culture, Sports, Science, and Technology","grant_id":"Strategic Research Program for Brain Sciences","title":null}],"total_grants":1,"fwci":0.5568,"citation_percentile":0.7254492,"influential_citations":2,"citation_trend":[{"year":2015,"count":2},{"year":2017,"count":1},{"year":2020,"count":2},{"year":2022,"count":1},{"year":2023,"count":1},{"year":2025,"count":1}],"oa_status":"closed","license":null,"oa_locations":[{"url":"https://pubs.aip.org/aip/jap/article-pdf/doi/10.1063/1.4914876/14772947/17a318_1_online.pdf","host_type":"publisher"},{"url":"https://doi.org/10.1063/1.4914876","host_type":"journal"}],"fields_of_study":["Transcranial Magnetic Stimulation Studies","Electromagnetic Fields and Biological Effects","Muscle activation and electromyography studies","Engineering","Medicine"],"mesh_terms":[],"keywords":["Electromagnetic coil","Transcranial magnetic stimulation","Robustness (evolution)","Search coil","Coil noise","Electric field","Acoustics","Nuclear magnetic resonance","Magnetic field","Finite element method","Materials science","Physics","Rogowski coil","Electrical engineering","Engineering","Stimulation","Chemistry","Neuroscience","Magnetic flux","Psychology"],"sdg_mappings":[{"sdg_number":0,"sdg_label":"Good health and well-being"}],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-06-11T03:32:48.239336Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}