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Depression does not affect time perception and time-to-contact estimation.

Oberfeld D, Thönes S, Palayoor BJ, Hecht H - Front Psychol (2014)

Bottom Line: However, experimental demonstrations of altered time perception in depressed patients are not conclusive.We added a timed action task (time-to-contact estimation, TTC) and compared this indirect time perception task to the more direct classical methods of verbal time estimation, time production, and time reproduction.We conclude that the notion that depression has a sizeable effect on time perception cannot be maintained.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychology, Section Experimental Psychology, Johannes Gutenberg-Universität Mainz Mainz, Germany.

ABSTRACT
Depressed patients frequently report a subjective slowing of the passage of time. However, experimental demonstrations of altered time perception in depressed patients are not conclusive. We added a timed action task (time-to-contact estimation, TTC) and compared this indirect time perception task to the more direct classical methods of verbal time estimation, time production, and time reproduction. In the TTC estimation task, the deviations of the estimates from the veridical values (relative errors) revealed no differences between depressed patients (N= 22) and healthy controls (N= 22). Neither did the relative errors of the TTC estimates differ between groups. There was a weak trend toward higher variability of the estimates in depressed patients but only at the shortest TTC and at the fastest velocities. Time experience (subjective flow of time) as well as time perception in terms of interval timing (verbal estimation, time production, time reproduction) performed on the same subjects likewise failed to produce effects of depression. We conclude that the notion that depression has a sizeable effect on time perception cannot be maintained.

No MeSH data available.


Related in: MedlinePlus

Mean Weber fractions as a function of time interval, task, and group.(A) Control group. (B) Depressive patients. Error bars: 95% CIs.
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Figure 4: Mean Weber fractions as a function of time interval, task, and group.(A) Control group. (B) Depressive patients. Error bars: 95% CIs.

Mentions: Time interval had a significant effect (see Figure 3) on the Weber fraction, F(2,84) = 34.429, p < 0.001, = 0.450, = 0.963. The Weber fraction was highest for the 0.5 s interval (M = 0.45, SD = 0.32), followed by the 2 s (M = 0.25, SD = 0.28) and the 60 s (M = 0.13, SD = 0.13) intervals. The task × group interaction, F(2,84) = 0.243, p = 0.680, = 0.006, and the time interval × group interaction, F(2,84) = 0.877, p = 0.416, = 0.020, were not significant (see Figure 4).


Depression does not affect time perception and time-to-contact estimation.

Oberfeld D, Thönes S, Palayoor BJ, Hecht H - Front Psychol (2014)

Mean Weber fractions as a function of time interval, task, and group.(A) Control group. (B) Depressive patients. Error bars: 95% CIs.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4109439&req=5

Figure 4: Mean Weber fractions as a function of time interval, task, and group.(A) Control group. (B) Depressive patients. Error bars: 95% CIs.
Mentions: Time interval had a significant effect (see Figure 3) on the Weber fraction, F(2,84) = 34.429, p < 0.001, = 0.450, = 0.963. The Weber fraction was highest for the 0.5 s interval (M = 0.45, SD = 0.32), followed by the 2 s (M = 0.25, SD = 0.28) and the 60 s (M = 0.13, SD = 0.13) intervals. The task × group interaction, F(2,84) = 0.243, p = 0.680, = 0.006, and the time interval × group interaction, F(2,84) = 0.877, p = 0.416, = 0.020, were not significant (see Figure 4).

Bottom Line: However, experimental demonstrations of altered time perception in depressed patients are not conclusive.We added a timed action task (time-to-contact estimation, TTC) and compared this indirect time perception task to the more direct classical methods of verbal time estimation, time production, and time reproduction.We conclude that the notion that depression has a sizeable effect on time perception cannot be maintained.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychology, Section Experimental Psychology, Johannes Gutenberg-Universität Mainz Mainz, Germany.

ABSTRACT
Depressed patients frequently report a subjective slowing of the passage of time. However, experimental demonstrations of altered time perception in depressed patients are not conclusive. We added a timed action task (time-to-contact estimation, TTC) and compared this indirect time perception task to the more direct classical methods of verbal time estimation, time production, and time reproduction. In the TTC estimation task, the deviations of the estimates from the veridical values (relative errors) revealed no differences between depressed patients (N= 22) and healthy controls (N= 22). Neither did the relative errors of the TTC estimates differ between groups. There was a weak trend toward higher variability of the estimates in depressed patients but only at the shortest TTC and at the fastest velocities. Time experience (subjective flow of time) as well as time perception in terms of interval timing (verbal estimation, time production, time reproduction) performed on the same subjects likewise failed to produce effects of depression. We conclude that the notion that depression has a sizeable effect on time perception cannot be maintained.

No MeSH data available.


Related in: MedlinePlus