posted on Apr, 5 2013 @ 06:07 AM
This study was conducted under approval by the Partners Human Research Committee (Institutional Review Board of Brigham and Women’s Hospital,
Partners Healthcare Systems) for the study involving humans, and by the Harvard Medical Area Standing Committee on Animals for the experimental
portion involving animals.
How cool is this?! Scientists connect human brain with rat brain, allowing direct transfer of information between the two brains. I received this
information from my Facebook amigo Hashem.
In conjunction with the use of brain-to-computer interface (BCI) techniques that translate brain function to generate computer commands, we
investigated the feasibility of using the FUS-based CBI to non-invasively establish a functional link between the brains of different species (i.e.
human and Sprague-Dawley rat), thus creating a brain-to-brain interface (BBI). The implementation was aimed to non-invasively translate the human
volunteer’s intention to stimulate a rat’s brain motor area that is responsible for the tail movement. The volunteer initiated the intention by
looking at a strobe light flicker on a computer display, and the degree of synchronization in the electroencephalographic
steady-state-visual-evoked-potentials (SSVEP) with respect to the strobe frequency was analyzed using a computer. Increased signal amplitude in the
SSVEP, indicating the volunteer’s intention, triggered the delivery of a burst-mode FUS (350 kHz ultrasound frequency, tone burst duration of 0.5
ms, pulse repetition frequency of 1 kHz, given for 300 msec duration) to excite the motor area of an anesthetized rat transcranially. The successful
excitation subsequently elicited the tail movement, which was detected by a motion sensor. The interface was achieved at 94.0±3.0% accuracy, with a
time delay of 1.59±1.07 sec from the thought-initiation to the creation of the tail movement. Our results demonstrate the feasibility of a
computer-mediated BBI that links central neural functions between two biological entities, which may confer unexplored opportunities in the study of
neuroscience with potential implications for therapeutic applications.