Table 1.
Animal | Array material, manufacture date, location | Implant date | Preinsertion impedances (kΩ) |
---|---|---|---|
Feline 1 | SIROF 2006, | January 2007 | Mean 16, Median 11, Min 4, Max 110 |
Cyberkinetics/EIC | |||
Feline 2 | SIROF 2006, | October 2008 | Mean 23, Median 14, Min 5, Max 160 |
Cyberkinetics/EIC | |||
Feline 3 | SIROF 2009, | July 2009 | Mean 50.4, Median 50, Min 42, Max 74 |
Blackrock Microsystems | |||
Feline 4 | SIROF 2010, | July 2010 | Mean 46.9, Median 47, Min 40, Max 63 |
Blackrock Microsystems |
Four SIROF arrays were chronically implanted in feline motor cortex. Felines 3 and 4 were microstimulated, while Felines 1 and 2 were used to obtain comparison recording-only data for long-term patterns of 1 kHz impedance and electrophysiological measures of chronic performance.