![]() ![]() Wilhelm Wundt had already reported the seminal experimental work in this area as early as 1887 (see 1). ![]() Among the questions that have been explored are the perception of the causal relationship between an action and its effect, consciousness and willingness to initiate voluntary acts, as well as the perceived temporal distance between actions and their consequences. The study of how people detect that they are agents of certain effects, and of how they perceive the relationship between their actions and their potential effects has been an interesting and productive research topic since the early times of experimental psychology. Thus, people are active agents in the control of events in their environments. These actions have an observable effect the phone stops ringing or a character appears on the screen. Picking up the phone and pressing a computer key are actions that people perform almost unconsciously in their daily lives. Humans constantly interact with their environment. Labclock Web is distributed without charge under a free software license (GPLv3) since one of our main objectives is to facilitate the replication of experiments and hence the advancement of knowledge in this area. ![]() Its degree of accuracy and precision in the presentation of stimuli has been technically validated, including the use of two cognitive experiments conducted with voluntary participants who performed the experiment both in our laboratory and via the Internet. After describing its technical features, we explain how to configure specific experiments using this tool. With this in mind, we developed Labclock Web, a web tool designed to conduct online and offline experiments using Libet’s clock. However, the technical details of the apparatus used to conduct these types of experiments are complex, and are rarely explained in sufficient detail as to guarantee an exact replication of the procedure. Examples of its use include experiments exploring the subjective sense of agency, action-effect binding, and subjective timing of conscious decisions and perceptions. Libet’s clock is a well-known procedure in experiments in psychology and neuroscience. ![]()
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