Figure 1. Temporal order and synchronous/asynchronous judgments after adaptation to sensorimotor delay.

Raw data for representative, naïve observer KJW. (A) A sample of the psychometric functions generated via temporal order judgments: ‘which came first, action or event?’. This sample shows unimodal data from the audio-motor section of the adaptation experiment. The percentage of ‘event before action’ trials (i.e. where observers report an illusory reversal of temporal order) is plotted as a function of test delay (the physical asynchrony between their action (a mousepress) and a sensory event (an auditory ‘click’ in this example)). The different coloured functions represent different sensorimotor adaptation delays (see Figure key for details). (B) Data for the same observer for a control experiment. The only difference between the data shown in A&B is the nature of the judgment type. In this data set, observers were presented with the same stimuli (‘mousepress-click’) but made synchronous/asynchronous (as opposed to temporal order) judgements (see main text for details). The same Figure key applies to both panels.