US 12,357,224 B1
Methods and apparatus for non-invasive neural activity sensing
Christopher J. Sullivan, Honolulu, HI (US); Ryan Y. Miyamoto, Honolulu, HI (US); Michael R. Hadmack, Honolulu, HI (US); and Jeffrey Watamull, Honolulu, HI (US)
Assigned to Oceanit Laboratories, Inc., Honolulu, HI (US)
Filed by Oceanit Laboratories, Inc., Honolulu, HI (US)
Filed on May 14, 2018, as Appl. No. 15/979,425.
Claims priority of provisional application 62/505,251, filed on May 12, 2017.
Int. Cl. A61B 5/00 (2006.01); A61B 5/05 (2021.01); A61B 5/24 (2021.01)
CPC A61B 5/4064 (2013.01) [A61B 5/05 (2013.01); A61B 5/24 (2021.01)] 23 Claims
OG exemplary drawing
 
1. An unshielded, non-invasive, ambulatory neural activity sensing device, comprising:
an array of alternating magnetic field (H-field) and electric field (E-field) sensors; and
a processor configured to localize an electromagnetic signal using a combination of H-field and E-field sensor outputs from the H-field and E-field sensors,
wherein the H-field sensors are interspersed with the E-field sensors along a same surface,
wherein the E-field sensors are arranged in sub-arrays of six to sixteen individual sensors and one or more H-field sensors alternates with one of the sub-arrays of E-field sensors,
wherein the E-field sensors and the H-field sensors are situated on substrates, wherein each of the E-field sub-arrays is situated on its own substrate, wherein the substrates are polygonal and are arranged such that each H-field sensor substrate is bordered on all sides in a two-dimensional plane by substrates bearing E-field sensor sub-arrays, and
wherein the device is unshielded.