Miniscope Zero presents, to the authors' knowledge, the first single-cell-resolution miniscope combining wide-area wireless power β a 6.63-MHz quasistatic cavity resonance (QSCR) link delivering over 500 mW across a 2,500 cmΒ² arena versus ~200 mW needed to run the device β with a real-time 8-Mbps optical uplink (200 Γ 200 px, 20 FPS) and a 2-kbps infrared control downlink, in a 4.12-g head unit.
Matched-condition bench data support the optics: a 0.45-NA, 1.6Γ emission path collected 2.6Γ more light than Miniscope v4 (98.2 Β± 7.7 vs 38.3 Β± 4.3 mean 8-bit intensity), resolving 6.2-Β΅m line pairs with a 6.05 Β± 0.54 Β΅m lateral PSF (n = 10). Transfer efficiency fell from ~10% at 50 mm to 4% at 150 mm receiver height, but three orthogonal coils plus an 11-mAh buffer sustained operation.
Reliability is the strongest systems result: dual-receiver combined frame loss of 0.002% (open field), 0.003% (complex environment), and 0.3% (enclosed maze) over the first 30 min, 0.006% across a full 3-h session, and 0.005% over 9 h.
Within-animal (n = 9), the tethered v4 increased distance traveled ~10% versus control (42.8 vs 39.0 m, P = 0.023), while the heavier wireless device did not (β7%, P = 0.73); each scope altered two of three metrics, with Miniscope Zero reducing speed (β8%) and immobility (β14%). Because head mass (4.12 vs 2.8 g) and tethering varied together, the drag-versus-mass interpretation stays confounded β a BGPT inference from the reported design.
Neural outputs matched expected CA1 physiology: 16 open-field sessions from 3 male mice gave 135 Β± 55 neurons/session with 36.7 Β± 13.3% place cells; enclosed-maze imaging (2 mice, 4 sessions) gave 125 Β± 77 neurons and 38.8 Β± 8.7% place cells; and two animals were imaged simultaneously via wavelength-separated red/NIR uplinks.
Reproducibility is strong on paper: hardware, firmware, and analysis code (MIO, CaMAP, FuzzyTrack) plus all recordings are openly released through GitHub and four UCLA Dataverse DOIs.
Confidence-weighted bottom line: engineering measurements are direct, matched-condition, and internally consistent (high confidence); the behavioral causal claim rests on n = 9 with confounded load variables (moderate); place-cell statistics show the platform works but at animal-level n too small for generality. Evidence that would change the verdict: a tether-length dose-response isolating drag from mass, cross-lab replication including female mice, or frame loss above ~1% outside the developers' lab.
Author reviews:
Know what changed, what holds up, and what remains uncertain. Every Friday. No ads.