Interrupting timing in interval production and discrimination: Similarities and differences

Interruptions in human timing have been studied in the last few years using temporal production and discrimination tasks. Expecting a break shortened perceived duration in both paradigms but manipulating break duration affected time production only, suggesting that preparatory processes might not take place in time discrimination. In time production, using cues revealed that providing information about the break may modulate the effect of break expectancy. For example, time was perceived as shorter when a break was expected in trials with no breaks, but forewarning participants of the break absence with a cue almost abolished the effect. In the present experiment, a tone was classified as "short" or "long" in a discrimination task. Location and duration of breaks were varied and cues were provided in some trials with no breaks. Results showed an effect of break expectancy: perceived duration shortened with increasing pre-break duration. Reducing expectancy with cues in uninterrupted tones decreased the proportion of "short" responses in long-tone trials, but not in short-tone trials. As in previous discrimination experiments, perceived duration was unaffected by varying break duration. Similarities and differences in results as well as in their interpretation when breaks are used in time production and time discrimination tasks are discussed.

[1]  S. Roberts,et al.  Isolation of an internal clock. , 1981, Journal of experimental psychology. Animal behavior processes.

[2]  M. Masson.  Using confidence intervals for graphically based data interpretation. , 2003, Canadian journal of experimental psychology = Revue canadienne de psychologie experimentale.

[3]  Claudette Fortin,et al.  Attentional Time-Sharing in Interval Timing , 2003 .

[4]  Warren H. Meck,et al.  Systems-level integration of interval timing and reaction time , 2004, Neuroscience & Biobehavioral Reviews.

[5]  W H Meck,et al.  Timing for the absence of a stimulus: the gap paradigm reversed. , 2000, Journal of experimental psychology. Animal behavior processes.

[6]  R. Ulrich,et al.  Response force is sensitive to the temporal uncertainty of response stimuli , 1997, Perception & psychophysics.

[7]  Scott W. Brown.  Attentional resources in timing: Interference effects in concurrent temporal and nontemporal working memory tasks , 1997, Perception & psychophysics.

[8]  Claudette Fortin,et al.  Timing during interruptions in timing. , 2005, Journal of experimental psychology. Human perception and performance.

[9]  Dan Zakay,et al.  Gating or switching? Gating is a better model of prospective timing (a response to ‘switching or gating?’ by Lejeune) 1 Originally published in Vol. 50, issue 1, pages 1–17; PII of the original publication: S0376-6357(00)00086-3. 1 , 2000, Behavioural Processes.

[10]  F. Macar,et al.  Effects of attention manipulation on judgments of duration and of intensity in the visual modality , 1997, Memory & cognition.

[11]  Catalin V Buhusi,et al.  Memory for timing visual and auditory signals in albino and pigmented rats. , 2005, Journal of experimental psychology. Animal behavior processes.

[12]  R. Näätänen,et al.  Foreperiod and simple reaction time. , 1981 .

[13]  W. Meck.  Attentional Bias between Modalities: Effect on the Internal Clock, Memory, and Decision Stages Used in Animal Time Discrimination a , 1984, Annals of the New York Academy of Sciences.

[14]  B. L. Brown,et al.  Internal Clock and Memory Processes in Animal Timing , 1994 .

[15]  W. Meck.  Functional and neural mechanisms of interval timing , 2003 .

[16]  J. Requin,et al.  The effect of conditional probability of the response signal on the simple reaction time. , 1969, Acta psychologica.

[17]  Helga Lejeune,et al.  Prospective timing, attention and the switch A response to ‘Gating or switching? gating is a better model of prospective timing’ by Zakay , 2000, Behavioural Processes.

[18]  T Hasbroucq,et al.  The influence of time preparation on motor processes assessed by surface Laplacian estimation , 2003, Clinical Neurophysiology.

[19]  C Fortin,et al.  Expecting a break in time estimation: attentional time-sharing without concurrent processing. , 2000, Journal of experimental psychology. Human perception and performance.

[20]  Robert Rousseau,et al.  An Adaptive Counter Model for Time Estimation , 1984 .

[21]  Louis Buffardi,et al.  Factors affecting the filled-duration illusion in the auditory, tactual, and visual modalities , 1971 .

[22]  R. Duncan Luce,et al.  Response Times: Their Role in Inferring Elementary Mental Organization , 1986 .

[23]  Sylvan Kornblum,et al.  Simple reaction time as a race between signal detection and time estimation: A paradigm and model , 1973 .

[24]  J. Artieda,et al.  Time, internal clocks, and movement , 1996 .

[25]  Sébastien Tremblay,et al.  Break expectancy in duration discrimination. , 2003, Journal of experimental psychology. Human perception and performance.

[26]  Russell M. Church,et al.  Control of an internal clock. , 1978 .

[27]  H. Lejeune.  Switching or gating? The attentional challenge in cognitive models of psychological time , 1998, Behavioural Processes.

[28]  R. Block,et al.  The role of attention in time estimation processes , 1996 .