An Ergonomic Analysis of the Fulcrum Effect in the Acquisition of Endoscopic Skills¶
Gallagher, A. G. (1998). An Ergonomic Analysis of the Fulcrum Effect in the Acquisition of Endoscopic Skills. Endoscopy, 30(7), 617-620.
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1 citation across 1 artifact.
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Primes¶
- Perception Action Loop
- Several loop properties are damaged at once: the movement-of-sensor relation is severed because the surgeon's own movement no longer moves the viewpoint (someone else holds the camera); reafference is corrupted by the fulcrum effect, where moving an instrument handle left moves its tip right, so self-caused change no longer matches the expected sensory consequence; and the continuity invariant is strained by latency and loss of depth and touch.
This sourceDocuments the laparoscopic fulcrum effect (handle-left moves tip-right) that corrupts the surgeon's reafference and degrades performance.
- Several loop properties are damaged at once: the movement-of-sensor relation is severed because the surgeon's own movement no longer moves the viewpoint (someone else holds the camera); reafference is corrupted by the fulcrum effect, where moving an instrument handle left moves its tip right, so self-caused change no longer matches the expected sensory consequence; and the continuity invariant is strained by latency and loss of depth and touch.
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Registry ID ref:2afb8ba25098 · see in the full table