Scalar Timing in Memory
The generalized account proposed here will develop the conclusion that scalar sources dominate in some time ranges, while other sources may dominate in others, and are applied to two additional timing tasks with different characteristics.
A mode control model of counting and timing processes.
The conclusion was that the same internal mechanism is used for counting and timing that can be used in several modes: the "event" mode for counting or the "run" and the "stop" modes for timing.
Bisection of temporal intervals.
The rats learned new temporal discriminations more easily when the response maintained its relative, rather than its absolute, meaning.
Properties of the Internal Clock a
- R. Church
- PsychologyAnnals of the New York Academy of Sciences
- 1 May 1984
Evidence has been cited for the following properties of the parts of the psychological process used for timing intervals: The pacemaker has a mean rate that can be varied by drugs, diet, and stress.…
Application of scalar timing theory to individual trials.
The covariance pattern among measures of the temporal characteristics of the high response rate supported a parallel, scalar timing model in which animals used on each trial a single sample from memory of the time of reinforcement and separate response thresholds to decide when to start and stop responding.
Methamphetamine and time estimation.
It is suggested that methamphetamine increases the speed of an internal clock used by rats in time discrimination tasks by about 10%.
The differential effects of haloperidol and methamphetamine on time estimation in the rat
Since methamphetamine releases several catecholamines, including dopamine, and haloperidol blocks dopamine receptors, it is plausible that the horizontal location of the psychometric function (the speed of the clock) is related to the effective level of dopamine.
Time left: linear versus logarithmic subjective time.
The results of both experiments are consistent with a Scalar Timing theory in which subjective time is linear in real time and memory variance is scalar, and they are inconsistent with a logarithmic time scale.
Hippocampus, time, and memory.
It is demonstrated that a fimbria-fornix lesion interferes with temporal and spatial working memory, reduces the remembered time of reinforcement stored in reference memory, and has no effect on the animal's sensitivity to stimulus duration.