Spark Biomedical unveils the Sparrow® Link Research Platform designed to enable research teams to customize the transcutaneous auricular neurostimulation (tAN) power of the FDA-cleared Sparrow Ascent. Spark Biomedical unveils the Sparrow® Link Research Platform designed to enable research teams to customize the transcutaneous auricular neurostimulation (tAN) power of the FDA-cleared Sparrow Ascent.