The speed of free will.

Do voluntary and task-driven shifts of attention have the same time course? In order to measure the time needed to voluntarily shift attention, we devised several novel visual search tasks that elicited multiple sequential attentional shifts. Participants could only respond correctly if they attended to the right place at the right time. In control conditions, search tasks were similar but participants were not required to shift attention in any order. Across five experiments, voluntary shifts of attention required 200-300 ms. Control conditions yielded estimates of 35-100 ms for task-driven shifts. We suggest that the slower speed of voluntary shifts reflects the "clock speed of free will". Wishing to attend to something takes more time than shifting attention in response to sensory input.

[1]  D. E. Irwin,et al.  Covert shifts of attention precede involuntary eye movements. , 2010, Perception & psychophysics.

[2]  C. Olivers,et al.  A boost and bounce theory of temporal attention. , 2008, Psychological review.

[3]  C. Körner,et al.  Memory processes in multiple-target visual search , 2007, Psychological research.

[4]  Antonio Torralba,et al.  Contextual guidance of eye movements and attention in real-world scenes: the role of global features in object search. , 2006, Psychological review.

[5]  I. Gilchrist,et al.  Evidence for a systematic component within scan paths in visual search , 2006 .

[6]  R. Engle,et al.  Working memory capacity and the top-down control of visual search: Exploring the boundaries of "executive attention". , 2006, Journal of experimental psychology. Learning, memory, and cognition.

[7]  S. Yantis,et al.  Selective visual attention and perceptual coherence , 2006, Trends in Cognitive Sciences.

[8]  Jeffrey D Schall,et al.  On the role of frontal eye field in guiding attention and saccades , 2004, Vision Research.

[9]  D. Hubel,et al.  The role of fixational eye movements in visual perception , 2004, Nature Reviews Neuroscience.

[10]  Jan Theeuwes,et al.  A new estimation of the duration of attentional dwell time , 2004, Psychonomic bulletin & review.

[11]  John Lisman,et al.  Recognition by top-down and bottom-up processing in cortex: the control of selective attention. , 2003, Journal of neurophysiology.

[12]  Dagmar Müller,et al.  Sit-and-Wait Strategies in Dynamic Visual Search , 2003, Psychological science.

[13]  Jeremy M. Wolfe,et al.  Memory for rejected distractors in visual search? , 2003 .

[14]  M. Chun,et al.  Implicit, long-term spatial contextual memory. , 2003, Journal of experimental psychology. Learning, memory, and cognition.

[15]  J. Wolfe.  Moving towards solutions to some enduring controversies in visual search , 2003, Trends in Cognitive Sciences.

[16]  Casimir J. H. Ludwig,et al.  Stimulus-driven and goal-driven control over visual selection. , 2002, Journal of experimental psychology. Human perception and performance.

[17]  K. Nakayama,et al.  The attentional blink in space and time , 2002, Vision Research.

[18]  J. Theeuwes,et al.  Irrelevant singletons capture attention: Evidence from inhibition of return , 2002, Perception & psychophysics.

[19]  George Sperling,et al.  Measuring and modeling the trajectory of visual spatial attention. , 2002, Psychological review.

[20]  A. Gellatly,et al.  Effect of object onset on the distribution of visual attention. , 2001, Journal of experimental psychology. Human perception and performance.

[21]  J D Schall,et al.  Dynamic dissociation of visual selection from saccade programming in frontal eye field. , 2001, Journal of neurophysiology.

[22]  Eileen Kowler,et al.  Eye movements during visual search: the costs of choosing the optimal path , 2001, Vision Research.

[23]  Jeremy M. Wolfe,et al.  Getting beyond the serial/parallel debate in visual search: a hybrid approach , 2001 .

[24]  A. Kramer,et al.  Attentional guidance of the eyes by contextual information and abrupt onsets. , 2001, Perception & psychophysics.

[25]  D. E. Irwin,et al.  Visual Search has Memory , 2001 .

[26]  S. Thorpe,et al.  The Time Course of Visual Processing: From Early Perception to Decision-Making , 2001, Journal of Cognitive Neuroscience.

[27]  C. Koch,et al.  Computational modelling of visual attention , 2001, Nature Reviews Neuroscience.

[28]  J M Wolfe,et al.  Search for multiple targets: Remember the targets, forget the search , 2001, Perception & psychophysics.

[29]  Hermann J. Müller,et al.  Object-based selection operates on a grouped array of locations , 2000, Perception & psychophysics.

[30]  Iain D Gilchrist,et al.  Refixation frequency and memory mechanisms in visual search , 2000, Current Biology.

[31]  Robert D. Rafal,et al.  Strategic control over saccadic eye movements: Studies of the fixation offset effect , 2000, Perception & psychophysics.

[32]  J. Enns,et al.  What’s new in visual masking? , 2000, Trends in Cognitive Sciences.

[33]  J. Wolfe,et al.  Attention is fast but volition is slow , 2000, Nature.

[34]  D. Gitelman,et al.  Covert Visual Spatial Orienting and Saccades: Overlapping Neural Systems , 2000, NeuroImage.

[35]  J. Juola,et al.  Evidence for Distinct Attentional Bottlenecks in Attention Switching and Attentional Blink Tasks , 2000, The Journal of general psychology.

[36]  M. Carrasco,et al.  The temporal dynamics of visual search: evidence for parallel processing in feature and conjunction searches. , 1999, Journal of experimental psychology. Human perception and performance.

[37]  A. Kingstone,et al.  Unmasking the inhibition of return phenomenon , 1999, Perception & psychophysics.

[38]  M H Fischer,et al.  An Investigation of Attention Allocation during Sequential Eye Movement Tasks , 1999, The Quarterly journal of experimental psychology. A, Human experimental psychology.

[39]  D. E. Irwin,et al.  Our Eyes do Not Always Go Where we Want Them to Go: Capture of the Eyes by New Objects , 1998 .

[40]  Todd S. Horowitz,et al.  Visual search has no memory , 1998, Nature.

[41]  M. Chun,et al.  Contextual Cueing: Implicit Learning and Memory of Visual Context Guides Spatial Attention , 1998, Cognitive Psychology.

[42]  M Corbetta,et al.  Frontoparietal cortical networks for directing attention and the eye to visual locations: identical, independent, or overlapping neural systems? , 1998, Proceedings of the National Academy of Sciences of the United States of America.

[43]  J. Duncan,et al.  Effects of similarity, difficulty, and nontarget presentation on the time course of visual attention , 1997, Perception & psychophysics.

[44]  David L. Sheinberg,et al.  Eye movements during parallel-serial visual search. , 1997, Journal of experimental psychology. Human perception and performance.

[45]  H. Egeth,et al.  Are attentional dwell times inconsistent with serial visual search? , 1996, Psychonomic bulletin & review.

[46]  J. Duncan,et al.  The Slow Time-Course of Visual Attention , 1996, Cognitive Psychology.

[47]  B. Dosher,et al.  The role of attention in the programming of saccades , 1995, Vision Research.

[48]  G. Sperling,et al.  Episodic theory of the dynamics of spatial attention. , 1995 .

[49]  M. Potter,et al.  A two-stage model for multiple target detection in rapid serial visual presentation. , 1995, Journal of experimental psychology. Human perception and performance.

[50]  Steven M. J. Hunt,et al.  MacProbe: A Macintosh-based experimenter’s workstation for the cognitive sciences , 1994 .

[51]  J. Wolfe,et al.  Guided Search 2.0 A revised model of visual search , 1994, Psychonomic bulletin & review.

[52]  Kimron Shapiro,et al.  Direct measurement of attentional dwell time in human vision , 1994, Nature.

[53]  S. Yantis.  Stimulus-driven attentional capture and attentional control settings. , 1993, Journal of experimental psychology. Human perception and performance.

[54]  J. Duncan,et al.  Beyond the search surface: visual search and attentional engagement. , 1992, Journal of experimental psychology. Human perception and performance.

[55]  H. C. Nothdurft,et al.  Texture segmentation and pop-out from orientation contrast , 1991, Vision Research.

[56]  M. Cheal,et al.  Central and Peripheral Precuing of Forced-Choice Discrimination , 1991, The Quarterly journal of experimental psychology. A, Human experimental psychology.

[57]  Jeff F. Miller.  The flanker compatibility effect as a function of visual angle, attentional focus, visual transients, and perceptual load: A search for boundary conditions , 1991, Perception & psychophysics.

[58]  K. Nakayama,et al.  Sustained and transient components of focal visual attention , 1989, Vision Research.

[59]  H J Müller,et al.  Spatial Cueing and the Relation between the Accuracy of “Where” and “What” Decisions in Visual Search , 1989, The Quarterly journal of experimental psychology. A, Human experimental psychology.

[60]  D. Broadbent,et al.  From detection to identification: Response to multiple targets in rapid serial visual presentation , 1987, Perception & psychophysics.

[61]  Eileen Kowler,et al.  Shared attentional control of smooth eye movement and perception , 1986, Vision Research.

[62]  G. Sperling,et al.  Attention gating in short-term visual memory. , 1986, Psychological review.

[63]  A. Treisman,et al.  A feature-integration theory of attention , 1980, Cognitive Psychology.

[64]  G. K. Noorden.  Movements of the Eyes , 1978 .

[65]  B. Wyble,et al.  The simultaneous type, serial token model of temporal attention and working memory. , 2007, Psychological review.

[66]  Jeremy M. Wolfe,et al.  Guided Search 4.0: Current Progress With a Model of Visual Search , 2007, Integrated Models of Cognitive Systems.

[67]  S. Tipper,et al.  Bend it like Beckham: Embodying the Motor Skills of Famous Athletes , 2006, Quarterly journal of experimental psychology.

[68]  Todd S. Horowitz,et al.  Visual Search: The role of memory for rejected distractors , 2005 .

[69]  E. Large,et al.  The dynamics of attending: How people track time-varying events. , 1999 .

[70]  S. Luck,et al.  What variety of attention is automatically captured by peripheral cues? , 1999, Perception & psychophysics.

[71]  K. Nakayama,et al.  Attention, pattern recognition and popout in visual search , 1998 .

[72]  D H Brainard,et al.  The Psychophysics Toolbox. , 1997, Spatial vision.

[73]  D G Pelli,et al.  The VideoToolbox software for visual psychophysics: transforming numbers into movies. , 1997, Spatial vision.

[74]  K L Shapiro,et al.  Temporary suppression of visual processing in an RSVP task: an attentional blink? . , 1992, Journal of experimental psychology. Human perception and performance.

[75]  J. Jonides.  Voluntary versus automatic control over the mind's eye's movement , 1981 .

[76]  Michael I. Posner,et al.  Please Scroll down for Article the Quarterly Journal of Experimental Psychology Orienting of Attention Orienting of Attention* , 2022 .

[77]  J. Wolfe,et al.  What Can 1 Million Trials Tell Us About Visual Search? , 1998 .