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Accounts of statistical learning, both implicit and explicit, often invoke predictive processes as central to learning, yet practically all experiments employ non-predictive measures during training. We argue that the common theoretical assumption of anticipation and prediction needs clearer, more direct evidence for it during learning. We offer a novel(More)
UNLABELLED Sensorimotor adaptation has traditionally been viewed as a purely error-based process. There is, however, growing appreciation for the idea that performance changes in these tasks can arise from the interplay of error-based adaptation with other learning processes. The challenge is to specify constraints on these different processes, elucidating(More)
Editor's Note: These short, critical reviews of recent papers in the Journal, written exclusively by graduate students or postdoctoral fellows, are intended to summarize the important findings of the paper and provide additional insight and commentary. For more information on the format and purpose of the Journal Club, please see A skilled pianist can(More)
A septum is not unusual within the first dorsal compartment of the wrist. The right and left forearms of 50 cadavers were dissected. A septum was identified 34% of the time. The septum separated the abductor pollicis longus tendon from the extensor pollicis brevis tendon. If the septum was present on one side, it was usually present on the other side. The(More)
The effect of three intrauterine contraceptive devices (I.U.D.)-Lippes D, Dalkon Shield, and Copper 7-on menstrual blood-loss has been studied serially by objective methods in 279 women. All the women had a minimum of two cycles following delivery, abortion, cessation of lactation, or previous pill or I.U.D. use. All pads and tampons used for two further(More)
Sensorimotor adaptation is thought to be driven by an error signal based on the difference between the actual and predicted outcome of a motor command. Experiments that study this process often confound variables such as extrinsic reward and task goals with the error that adaptation seeks to minimize. Therefore changes in behavior during these tasks cannot(More)
Seventy-one cadaveric feet were dissected, with attention to communicating branches of the digital nerves, the diameters of the digital nerves, the distance between the metatarsal heads, and the presence or absence of interdigital neuromas. A communicating branch was absent in 52 feet (73.2%) and present in 19 specimens (26.8%). The communication was from(More)
Sensorimotor adaptation occurs when there is a discrepancy between the expected and actual sensory consequences of a movement. This learning can be precisely measured, but its source has been hard to pin down because standard adaptation tasks introduce two potential learning signals: task performance errors and sensory prediction errors. Here we employed a(More)
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