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Non-predictive online spatial coding in the posterior parietal cortex when aiming ahead for catching
Sinéad A Reid1, Joost C Dessing2
1School of Psychology, Queen's University Belfast, David Keir Building, 18-30 Malone Road, BT9 5BN, Belfast, Northern Ireland.
Abstract:
Catching movements must be aimed ahead of the moving ball, which may require predictions of when and where to catch. Here, using repetitive Transcranial Magnetic Stimulation we show for the first time that the Superior Parietal Occipital Cortex (SPOC) displays non-predictive online spatial coding at the moment the interception movements were already aimed at the predicted final target position. The ability to aim ahead for catching must thus arise downstream within the parietofrontal network for reaching.
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Prediction Intervals
However, the point estimate is most likely not the exact value of the population parameter, but close to it. After calculating point estimates, we construct interval estimates, called confidence intervals or prediction intervals. This prediction interval comprises a range of values unlike the point estimate and is a better predictor of the observed sample value, y.