This article provides data from a contemporary replication of Libet׳s experiment. For the methodology, results and discussion of the replication, see the article "Libet׳s Experiment: A Complex Replication" (Dominik et al., 2018). Three types of data are presented in this article: (1) introspective reports (M, W and S), (2) EMG onset times relative to a mouse click or to the target time in tasks with a movement at pre-set time and (3) relevant averaged EEG data.

• Publikační typ
• časopisecké články MeSH

Libet's experiment is an influential classical study, which does not stop provoking heated debates. However, a full-scale replication has not been carried out to this day. Libet-style studies have usually focused on isolated ideas and concepts and never on the whole experiment in all its complexity. This paper presents detailed methodological description and results of a complex replication study. The methodology follows Libet's directions closely in most cases; when it does not, the differences are described and elaborated. The results replicate Libet's key findings, but substantial differences were found in some of the results' categories, such as the introspective reports or the number of readiness-potentials found. The discussion also addresses some current problems pertaining the methodology of the Libet-style experiments and provides some recommendations based on a detailed process evaluation.

• MeSH
• dospělí MeSH
• elektroencefalografie MeSH
• elektromyografie MeSH
• hmatová percepce fyziologie   MeSH
• kontingentní negativní variace fyziologie   MeSH
• lidé MeSH
• mladý dospělý MeSH
• pohybová aktivita fyziologie   MeSH
• psychomotorický výkon fyziologie   MeSH
• uvědomování si fyziologie   MeSH
• vědomí fyziologie   MeSH
• vnímání času fyziologie   MeSH
• zpráva o sobě MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• mladý dospělý MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH

The time of subjectively registered urge to move (W) constituted the central point of most Libet-style experiments. It is therefore crucial to verify the W validity. Our experiment was based on the assumption that the W time is inferred, rather than introspectively perceived. We used the rotating spot method to gather the W reports together with the reports of the subjective timing of actual movement (M). The subjects were assigned the tasks in two different orders. When measured as first in the respective session, no significant difference between W and M values was found, which suggests that uninformed subjects tend to confuse W for M reports. Moreover, we found that W values measured after the M task were significantly earlier than W values measured before M. This phenomenon suggests that the apparent difference between W and M values is in fact caused by the subjects' previous experience with M measurements.

• MeSH
• dospělí MeSH
• lidé MeSH
• mladý dospělý MeSH
• pohybová aktivita fyziologie   MeSH
• uvědomování si fyziologie   MeSH
• vnímání času fyziologie   MeSH
• vůle fyziologie   MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• mladý dospělý MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH