Hardware Processing Platform (HPP)
A closed loop signal processing platform that connects directly to the Digital Lynx SX motherboard, providing real-time data analysis and response for low-latency feedback stimulation experiments.
With HPP, you can now analyze and respond to input signals in less than 1 millisecond!
HPP can execute experiment stimuli with precise control of Digital Lynx SX analog and digital outputs. HPP contains a customizable processor that communicates with the DLSX motherboard, providing low-latency access to the input acquisition data - both the analog data and the TTL I/O.
Highlights
- User-programmable; customize to any application
- Sub-millisecond latency feedback response
- Digital signal filtering and other DSP functions
- Analog signal output
- Allows combination of detect and trigger to manage complex closed loop experiments
Process data from all digital and analog Digital Lynx SX inputs, including:
- Buffered tethered headstages / Digital Lynx input boards
- FreeLynx wireless digital telemetry headstages
- Digital multiplexing (MUX) headstages
Demo Applications
- Real-time spike detection
- Neural ensemble detection and burst analysis
- Experiment control - high precision TTL pulse trains
HPP can be programmed via C/C++, VHDL or Simulink.
HPP is now included in all new DLSX systems.
Already have a DLSX? Please contact us to upgrade your system with HPP.
Documents:
HPP Applications Project
The HPP Applications project will provide packaged applications that target the Neuralynx Hardware Processing Platform (HPP) for common real-time feedback loop and analysis processes using the Digital Lynx SX acquisition system.
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Application #1: Oscillation Detection
This is a closed loop application that runs on the HPP, detecting oscillation power within the sharp wave ripple (150 to 250 Hz) or Theta band (4 to 12 Hz). When the oscillation has been confirmed, this application triggers a stimulus via a TTL output pulse. An oscillation is confirmed when the oscillation power is above a user-defined threshold for the amount of time set by the user.
Download Oscillation Detection for HPP (ZIP) v1.1 User Guide for Oscillation Detection (PDF)
Specifications
| Programming Tools | MATLAB®, Simulink®, C/C++ (RTOS), VHDL (FPGA) |
| CPU | 1 GHz Dual ARM Cortex A9 |
| RAM | 1 GB DDR3 |
| Flash | 16 MB |
| Interface | SD Card |
| Connections | USB 2.0, Gigabit Ethernet, Serial UART, JTAG |
Publications
- Closed-Loop Interruption of Hippocampal Ripples through Fornix Stimulation in the Non-Human Primate
Omid Talakoub, Andrea Gomez Palacio Schjetnan, Taufik A. Valiante, Milos R. Popovic, Kari L. Hoffman - Harnessing ‘Time’ to Enhance Memory: Using Closed-Loop Technology To Facilitate Oscillatory Synchrony & Support Cognition
Andrew Garcia
Compatible Products
Related Products
- Digital Lynx SX-M Upgrade
- Digital Lynx Combo Board
- Digital Lynx 4SX
- Digital Lynx 16SX
- Hybrid Input Board (retired)
- ERP-27 (retired)
- Digital Reference Selector Board (DRS-36) (retired)
- Cheetah32 (retired)