Jasper, a black Shepsky with one blue and one brown eye and tan paws, wearing a scientist's coat and goggles with a goofy tongue-out expression, actively probing a spherical brain culture in a squared illuminated chamber connected by cables to a black studio speaker with a yellow cone.
JSSL / CULTURE STUDY

CORTEXCULTURE

SELECT A CONTROLMODEL PREVIEW
Cortex Culture, with Stimulus, Culture and Response sections

Swipe across the instrument to reach every control →

LIVE DEMO

Sound with
a mind of its own.

Start a phrase. Turn a knob.
See where the experiment takes you.

Press Play on the instrument. Every control in this demo is operational. Get a taste of how Cortex Culture could take your next score or track out of the lab—and into something extraordinary.

THE SCIENCE OF AN UNEXPECTED SOUND

An idea from biology.
A system built for sound.

Cortex begins with a question: what if a synthesizer behaved like a connected, adapting network? Instead of treating a held note as a fixed event, its modeled interactions let the harmonic character develop over time.

01

Stimulus

Energy enters the system.

Pitch establishes the note. Excite supplies energy; Density changes the balance of harmonic groups. Tissue moves those relationships toward metallic, inharmonic tones.

02

Culture

Connections change the voice.

Growth recruits overtones. Synapse couples neighboring groups; Modulation adds phase interaction. Plasticity softens upper harmonics over time, while Memory shapes how quickly that adaptation unfolds.

03

Response

Motion becomes music.

Axon distributes phase and stereo positions. Dream introduces slow spectral motion; Chaos adds irregularity around a stable fundamental. A membrane filter, envelope, and effects shape the final voice.

The mathematics behind the metaphor.

Harmonic balance, phase coupling, damping, and adaptation turn the biological idea into a playable sound engine. Stability restrains movement; Plasticity and Memory govern change through time. This is a stylized computational model inspired by biology, rather than a simulation fitted to biological recordings.

Open research. An original musical interpretation.

The original Cortex research notes reference open work on brain organoids: how networks develop, synchronize, and produce changing electrical rhythms. One reference is Tal Sharf’s 70.92 GB Dryad dataset of extracellular organoid recordings, collected with high-density electrode arrays and Neuropixels probes. Dryad publishes its research datasets under CC0.

That research provides context for the instrument’s network-inspired design: interacting groups, evolving activity, and a response that changes over time. Cortex turns those ideas into authored synthesis controls. Cortex uses an authored computational sound model; the open archive is a research reference, not a collection of recordings loaded into the instrument.

Research reference: Sharf, T. (2022), Extracellular Recordings from Human Brain Organoids Using High-density CMOS Arrays, Dryad, doi:10.25349/D9031Z. Research citation does not imply endorsement.

Jasper Shepsky Sound Labs