Fig. 1From: Historical perspectives, challenges, and future directions of implantable brain-computer interfaces for sensorimotor applicationsThe Utah Arrayâ„¢. (A) Flat 96 electrode array fabricated by etching a solid piece of silicon followed by metallization, insulation, and wire bonding processes to create a final assembly. (B) Slanted array created for recording at electrical activity at various penetration depths. Photographs provided by Blackrock Microsystems, Inc.Back to article page