p257fig06.05 A curve tracing task with monkeys was used by Roelfsema, Lamme, and Spekreijse in 1998 to demonstrate how spatial attention can flow along object boundaries.  See the text for details.<BR>||  Attention flows along curves: Roelfsema etal 1998: Macaque V1.  fixation (300ms) -> stimulus (600ms RF - target curve, distractor) -> saccade.  Crossed-curve condition: attention flows across junction between smoothly connected curve segments, Gestalt good continuation