scholarly journals Judgments of the duration of visually marked empty time intervals: Linking perceived duration and sensitivity

1998 ◽  
Vol 60 (2) ◽  
pp. 319-330 ◽  
Author(s):  
Simon Grondin
Keyword(s):  
Time Intervals ◽  
Empty Time ◽  
Perceived Duration

Categorical Rhythm Perception as a Result of Unilateral Assimilation in Time-Shrinking

1998 ◽  
Vol 16 (2) ◽  
pp. 201-222 ◽  
Author(s):  
Takayuki Sasaki ◽  
Yoshitaka Nakajima ◽  
Gert Ten Hoopen
Keyword(s):  
Total Duration ◽  
Considerable Change ◽  
Time Interval ◽  
Rhythm Perception ◽  
Time Intervals ◽  
Empty Time Interval ◽  
Method Of Adjustment ◽  
Empty Time ◽  
Perceptual Mechanism ◽  
Perceived Duration

In previous studies, we established an illusion of time perception that we called time-shrinking: an empty time interval, immediately preceded by a slightly shorter time interval, is underestimated. In the first experiment of the present study, we examined the perceived duration not only of the second interval (t2), but also of the first interval (tl). The empty time intervals tl and t2, making a total duration of 90,180, 360, or 720 ms, were presented such that the time ratio between them changed systematically. The points of subjective equality of tl and t2 were established by the method of adjustment. In the patterns typically susceptible to timeshrinking, that is, in which t2 was underestimated, tl was perceived almost vertically. In the second experiment, listeners had to bisect an empty duration of 180 ms, marked by sound bursts. The bisecting sound marker was positioned closer to the initial marker than to the final one. Thus, tl had to be shorter than t2 in order for a regular pattern to be perceived. In the third experiment, just-noticeable forward and backward displacements of the middle sound marker were measured by a transformed updown method. The prediction that the interval of uncertainty was closer to the initial than to the final sound marker was confirmed. The three experiments demonstrated the existence of unilateral temporal assimilation, and it is argued that this perceptual mechanism causes a category of 1:1 rhythms, despite a considerable change in temporal ratio between two contiguous time intervals.

Spatial Effects on Temporal Categorisation

Perception ◽  
10.1068/p6165 ◽  
2009 ◽  
Vol 38 (5) ◽  
pp. 748-762 ◽  
Author(s):  
Marie-Ève Roussel ◽  
Simon Grondin ◽  
Peter Killeen
Keyword(s):  
Temporal Processing ◽  
Critical Role ◽  
Vertical Plane ◽  
Spatial Effects ◽  
Time Intervals ◽  
Spatial Factors ◽  
Upper Visual Field ◽  
Sensitivity Level ◽  
Marking Time ◽  
Perceived Duration

We examined the influence of spatial factors in temporal processing. Participants categorised as short or long empty intervals marked by two brief flashes delivered from locations differing in height and depth (experiment 1), or from two of three locations on a vertical plane (experiment 2). The perceived duration of intervals, as determined by the point of subjective equality, was affected by the height and depth of the signals (experiment 1). Experiment 2 showed that the point of fixation plays a critical role in perceived duration. The duration of an interval located in the upper visual field is perceived as longer when participants fixate the higher visual source and shorter when the fixation point is set in the middle; this latter result also generally applies when the fixation point is in the lower source. Finally, for the sensitivity level, there was a significant segment (upper versus lower) × direction (descending versus ascending) interaction in experiment 1; a similar interaction effect varied according to the fixation point in experiment 2. In experiment 2, the Weber fractions were around 0.22. Most results can be explained in terms of the need to shift attention from one visual source—for marking time intervals—to another.

scholarly journals Time-Shrinking and Categorical Temporal Ratio Perception

2006 ◽  
Vol 24 (1) ◽  
pp. 1-22 ◽  
Author(s):  
Gert Ten Hoopen ◽  
Takayuki Sasaki ◽  
Yoshitaka Nakajima ◽  
Ger Remijn ◽  
Bob Massier ◽  
...  
Keyword(s):  
Cluster Analysis ◽  
Categorical Perception ◽  
Scaling Analysis ◽  
Rhythm Perception ◽  
Time Intervals ◽  
Temporal Dimension ◽  
Matching Procedure ◽  
T1 And T2 ◽  
Fourth Experiment ◽  
Empty Time

In a previous study, we presented psychophysical evidence that time-shrinking (TS), an illusion of time perception that empty durations preceded by shorter ones can be conspicuously underestimated, gives rise to categorical perception on the temporal dimension (Sasaki, Nakajima, & ten Hoopen, 1998). In the present study, we first survey studies of categorical rhythm perception and then describe four experiments that provide further evidence that TS causes categorical perception on the temporal dimension. In the first experiment, participants judged the similarity between pairs of /t1/t2/ patterns (slashes denote short sound markers delimiting the empty time intervals t1 and t2). A cluster analysis and a scaling analysis showed that patterns liable to TS piled up in a 1:1 category. The second and third experiments are improved replications in which the sum of t1 and t2 in the /t1/t2/ patterns is kept constant at 320 ms. The results showed that the 12 patterns /115/205/, /120/200/,  . . ., /165/155/, /170/150/ formed a 1:1 category. The fourth experiment utilizes a cross-modality matching procedure to establish the subjective temporal ratio of the /t1/t2/ patterns and a 1:1 category was established containing the 11 patterns /120/200/, /125/195/,  . . ., /165/155/, /170/150/. On basis of these converging results we estimate a domain of perceived 1:1 ratios as a function of total pattern duration (t1 + t2) between 160 and 480 ms. We discuss the implications of this study for rhythm perception and production.

Contrast Influences Perceived Duration of Brief Time Intervals

2004 ◽  
Vol 98 (2) ◽  
pp. 682-684
Author(s):  
Ted Jaeger ◽  
Jennifer Lang
Keyword(s):  
Time Intervals ◽  
Perceived Duration

scholarly journals Memory for empty time intervals in pigeons

2001 ◽  
Vol 29 (4) ◽  
pp. 293-301 ◽  
Author(s):  
Douglas S. Grant
Keyword(s):  
Time Intervals ◽  
Empty Time

From Filled to Empty Time Intervals: Quantifying Online Behaviors with Digital Traces

2020 ◽  
Vol 14 (4) ◽  
pp. 219-238 ◽  
Author(s):  
Tai-Quan Peng ◽  
Yixin Zhou ◽  
Jonathan J. H. Zhu
Keyword(s):  
Time Intervals ◽  
Empty Time

Modality-Specific Effects on Discrimination of Short Empty Time Intervals

1979 ◽  
Vol 48 (3) ◽  
pp. 807-814 ◽  
Author(s):  
Shraga Hocherman ◽  
Gita Ben-Dov
Keyword(s):  
Human Subjects ◽  
Visual Stimuli ◽  
Random Order ◽  
Strong Response ◽  
Time Intervals ◽  
Specific Effects ◽  
The Subject ◽  
Response Biases ◽  
Empty Time

The ability of human subjects to judge the duration of short empty time intervals was studied in relation to the modality composition of the marker signals. Ac each trial, a pair of empty intervals was presented by a series of three successive stimuli, and the subject was asked to point out the longer interval of the two. Tone pips and flashes of light were used as the bounding signals. All the possible combinations of auditory and visual stimuli were used, in random order, to delimit pairs of intervals. Performance was found modality-independent when the first two stimuli were of the same modality. Strong response biases were introduced by varying the modality of the first or the second stimulus. Analysis of these biases indicates that memorization of the empty time intervals is affected by the modality of the binding signals.

Discrimination of two neighboring intra- and intermodal empty time intervals marked by three successive stimuli

2014 ◽  
Vol 149 ◽  
pp. 134-141 ◽  
Author(s):  
Tsuyoshi Kuroda ◽  
Emi Hasuo ◽  
Katherine Labonté ◽  
Vincent Laflamme ◽  
Simon Grondin
Keyword(s):  
Time Intervals ◽  
Empty Time

Bilateral Assimilation of Two Neighboring Empty Time Intervals

2005 ◽  
Vol 22 (3) ◽  
pp. 411-424 ◽  
Author(s):  
Ryota Miyauchi ◽  
Takayuki Nakajima
Keyword(s):  
Time Perception ◽  
Time Intervals ◽  
Subjective Equality ◽  
T1 And T2 ◽  
The Difference ◽  
Empty Time

In many sensory dimensions, assimilation of characteristics of perceived events can be found. In the present study, we examined whether assimilation appeared also in time perception, employing time intervals shorter than 300 ms marked by tone bursts. In Experiment 1, we measured points of subjective equality of two neighboring empty time intervals, t1 and t2. The perceived durations approached each other when the difference between t1 and t2 was small. That is, bilateral assimilation took place. In Experiment 2, we measured points of subjective equality of t1 in smaller steps and across a wider durational range than in Experiment 1. We found that t1 was overestimated slightly when it was a bit shorter than t2, and t1 was underestimated slightly when it was a bit longer than t2. The overestimation and the underestimation were considered as typical assimilation. The results also showed that the perception of t1 changed from assimilation to contrast when the difference between t1 and t2 exceeded the range -80 � t1 � t2 � 40 ms.

scholarly journals Pigeons’ memory for empty time intervals marked by visual or auditory stimuli

1999 ◽  
Vol 27 (2) ◽  
pp. 190-205 ◽  
Author(s):  
Angelo Santi ◽  
Lori Ross ◽  
Romina Coppa ◽  
James Coyle
Keyword(s):  
Auditory Stimuli ◽  
Time Intervals ◽  
Empty Time
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