David Bourget (Western Ontario)
David Chalmers (ANU, NYU)
Rafael De Clercq
Jack Alan Reynolds
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Consciousness and Cognition 11 (2):231-40 (2002)
Trevena and Miller provide further evidence that readiness potentials occur in the brain prior to the time that participants claim to have initiated a voluntary movement, a contention originally forwarded by Libet, Gleason, Wright, and Pearl . In their examination of this issue, though, aspects of their data lead them to question whether their measurement of the initiation of a voluntary movement was accurate. The current article addresses this concern by providing a direct analysis of biases in this task. This was done by asking participants to make subjective timing decisions regarding a stimulus that could be measured objectively. Our findings suggest that their timing task was indeed biased such that participants' tend to report events as happening approximately 70 ms later than they actually happened. Implications for the original Libet et al. claims are discussed
|Keywords||*Consciousness States *Data Collection *Perception *Physiological Correlates *Time Series Response Bias Time Perception|
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Citations of this work BETA
Markus E. Schlosser (2014). The Neuroscientific Study of Free Will: A Diagnosis of the Controversy. Synthese 191 (2):245-262.
Jeff Miller & Wolf Schwarz (2014). Brain Signals Do Not Demonstrate Unconscious Decision Making: An Interpretation Based on Graded Conscious Awareness. Consciousness and Cognition 24 (1):12-21.
A. DAnquah, M. Farrell & D. Oboyle (2008). Biases in the Subjective Timing of Perceptual Events: Libet Et Al. (1983) Revisited. Consciousness and Cognition 17 (3):616-627.
Jeff Miller, Paula Vieweg, Nicolas Kruize & Belinda McLea (2010). Subjective Reports of Stimulus, Response, and Decision Times in Speeded Tasks: How Accurate Are Decision Time Reports? Consciousness and Cognition 19 (4):1013-1036.
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