# Sonogenetics **Entity class:** Method **Domain:** Field-Addressed Neural Interfaces / Ultrasound Neuromodulation **Doc Type:** Technology Node **Maturity:** Preclinical **Collection:** [[collections/Neurotech|Neurotech]] **Primary Sources:** [[research/Research Inferences|Research Inferences]] (INF-0026, INF-0027) ## Definition **Sonogenetics controls genetically chosen cells with ultrasound by installing mechanosensitive ion channels, so that acoustic pressure becomes an ionic event in the targeted population.** Selectivity comes from the gene and its promoter; focus comes from the transducer. The approach was first reported in the nematode *C. elegans* (Salk Institute, 2015) and has since been extended to mammalian neurons. It pairs with acoustic reporter genes, such as the gas-vesicle proteins developed in [[wiki/Mikhail Shapiro laboratory|Mikhail Shapiro's laboratory]] at [[wiki/Caltech|Caltech]], which make engineered cells visible to ultrasound imaging. ## Architecture Sonogenetics is the receptor half of a field-addressed interface; [[wiki/Ultrasound Neurotechnology|ultrasound hardware]] is the field half. Because the two improve independently, addressable population size scales with expression pattern while resolution scales with acoustic focusing. [[wiki/Merge Labs|Merge Labs]] capitalized both halves inside one company in January 2026: Shapiro's molecular line and the ultrasound line of [[wiki/Forest Neurotech|Forest Neurotech]], with a [[wiki/Butterfly Network|Butterfly Network]] ultrasound-on-chip supply license from 1 September 2026. ## Forward Capability A one-time sensitizing gene delivery followed by external ultrasound addressing moves the risky step into a single procedure and leaves every hardware upgrade outside the body. That is the configuration the register expects to reach populations rather than patients, and it will arrive under a clinical indication reported as a gene therapy. ## Open Questions - The first human sonogenetic study: indication, vector and channel. - Expression uniformity across a functionally meaningful population. - Long-term safety of chronic ultrasound exposure at stimulation intensities. ## Research Inferences These entries translate the forward-looking register in [[research/Research Inferences|Research Inferences]] into ordinary wiki prose. The tier labels apply to the inference, not automatically to every factual anchor inside it. Proposed IDs above INF-0500 come from the 2026-10-23 cycle: [[research/Research Inferences Integration Report - 2026-10-23|Research Inferences Integration Report — 2026-10-23]] · [[research/Research Inferences Integration Audit - 2026-10-23|Research Inferences Integration Audit — 2026-10-23]]. - **INF-0026 — Strongly indicated.** Merge Labs joins ultrasound hardware from Forest Neurotech to Mikhail Shapiro's acoustic-biomolecular line at Caltech, which is the first time the field half and the receptor half of a field-addressed interface have been capitalized inside one company. The composite — sensitize, then address — is what removes surgery from the bandwidth equation. - **INF-0027 — Established.** Sonogenetics works by installing mechanosensitive channels so that acoustic pressure becomes an ionic event in a chosen cell population. Selectivity is therefore a genetic property and focality an acoustic one, and the two can be improved independently, which is why this architecture scales differently from electrodes. - **INF-0034 — Plausible.** A one-time sensitizing edit followed by a lifetime of external field addressing inverts the economics of neural interfacing: the expensive, risky step happens once and the hardware upgrades stay outside the body. This is the configuration most likely to reach populations rather than patients. - **INF-0039 — Plausible.** Field-plus-receptor architectures make addressable population size a function of expression pattern rather than of implant geometry. If expression can be driven across a cortical region, the addressable channel count jumps by orders of magnitude in a single step rather than by iterative device generations. - **INF-0050 — Plausible.** If the receptor layer is genetic and the field layer is external, the interface upgrades on a hardware cadence while the biological substrate stays constant. That is the first architecture in neurotechnology with a Moore's-law-shaped improvement path, because the fast-moving component is no longer inside the patient. - **INF-0478 — Plausible.** The first human receiving a sensitizing genetic modification for the express purpose of field-addressed neural interfacing is the marker that the molecular architecture has arrived. It will occur under a clinical indication and will be reported as a gene therapy. ## Relationships - **field_half:** [[wiki/Ultrasound Neurotechnology|Ultrasound Neurotechnology]] · [[wiki/Functional Ultrasound|Functional Ultrasound]]. - **developed_in:** [[wiki/Mikhail Shapiro laboratory|Mikhail Shapiro laboratory]] · [[wiki/Shapiro Lab|Shapiro Lab]] · [[wiki/Caltech|Caltech]]. - **capitalized_in:** [[wiki/Merge Labs|Merge Labs]], with [[wiki/Forest Neurotech|Forest Neurotech]] lineage and [[wiki/Butterfly Network|Butterfly Network]] hardware. - **modality_peers:** [[wiki/Optogenetics|Optogenetics]] (cell-type specificity, optical depth limit) · [[wiki/Magnetogenetics|Magnetogenetics]] (depth without a hole). - **state_lineage:** [[wiki/DARPA N3|DARPA N3]] funded magnetic, optical and acoustic access as one design space. - **cluster_home:** [[wiki/Molecular Neural Interfaces|Molecular Neural Interfaces]]. - **ecosystem:** [[wiki/Neurotechnology Ecosystem|Neurotechnology Ecosystem]] · [[collections/Neurotech|Neurotech]]. ## Sources - [Sonogenetics is a non-invasive approach to activating neurons in *C. elegans* — Nature Communications, 2015](https://www.nature.com/articles/ncomms9264) - [Merge Labs and Butterfly Network partner to advance ultrasound-based brain-computer interfaces — Butterfly Network, 1 September 2026](https://ir.butterflynetwork.com/News/press-releases/news-details/2026/Merge-Labs-and-Butterfly-Network-Partner-to-Advance-Ultrasound-Based-Brain-Computer-Interfaces/default.aspx) - [OpenAI invests in Sam Altman's brain-computer interface startup Merge Labs — TechCrunch, 15 January 2026](https://techcrunch.com/2026/01/15/openai-invests-in-sam-altmans-brain-computer-interface-startup-merge-labs/) As of 23 October 2026.