# Key Points from #hplusroadmap IRC Discussions

• Users discussed ultrasonic brain stimulation technology, including Sony's patent for "beaming information into brain" using ultrasonic pulses to induce sensory experiences, comparing it to Tyler Lab's research in the same field.

• DIY ultrasound brain stimulation was explored technically, with estimates that basic components might cost around $100, though a complete functional system would require multiple transducers and careful power calibration to prevent brain damage.

• Participants compared transcranial direct current stimulation (tDCS) with ultrasound stimulation methods, with some suggesting ultrasound may be preferable despite having fewer DIY implementations.

• The channel utilized a "paperbot" system that automatically retrieves and converts scientific papers to plain text when users share DOIs, demonstrating the community's focus on making research accessible.

• A significant neuroscience finding was shared about how the lymphatic system flushes cerebral spinal fluid through the brain during sleep to clear toxins, linking to University of Rochester Medical Center research.

• Users discussed the security breach at Black Market Reloaded (BMR), a darknet marketplace that was forced to shut down after source code was leaked due to vulnerable SQL queries.

• The Hodgkin-Huxley model for quantifying neuronal spike generation was briefly mentioned, with reference to a collection of neuroscience papers available at http://diyhpl.us/~bryan/papers2/neuro/ultrasound/.