| OCR Text |
Show 14 Maia presses a button on the recording apparatus; she speaks into it>5 her voice small but clear: "Now running Mustard. Avoidance conditioning. Number of trails: 50. Pre-stimulus interval 2.0, post-stimulus interval 5.0 seconds. Shock duration .5, shock intensity 2.25 milliamps..." As she speaks, she twists the numbered dials on the face of the control apparatus, setting it to sound the stimulus tone and record the dog's behavior. Then it is ready, and she turns toward Mustard. She loosens the rope lead from the file cabinet, and pulls the dog toward the box. He struggles back, but the rope lead tightens, as a choke, and he has no choice. Maia lifts him up onto the platform inside the box; he struggles, but she is stronger, and she straps the canvas harness around his body. He struggles still, but now he cannot escape. She ties his right foreleg to the moveable leg-lift bar; he pulls on it a few times, as if he remembers what response is expected of him, and the bar makes a little clicking noise outside the box. Then Maia reaches for a thin coil of wire hanging from the ceiling of the box; there is a flat patch at the end of it;a sensor to measure electromyogram potentials in the muscles, and with adhesive tape she fixes the patch to a shaved area on the side of Mustard's leg. Finally, she tapes two small silver disks, attached to the end of a red wire, to the wrist-joint of Mustard's foreleg, just above the footpad and below the dew claw. It is the terminal that will give him the shock. She tightens the stomach strap. |
