Trace Conditioning
Trace Conditioning - Related Videos
07:02
Trace Fear Conditioning in Mice
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Cited by 32 •
2014
In the following experiment we describe a protocol for trace fear conditioning in mice. This type of associative memory includes a trace period that separates the neutral stimulus and the unconditioned stimulus.
11:03
Conditional Genetic Transsynaptic Tracing in the Embryonic Mouse Brain
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Cited by 5 •
2014
Capitalizing on a binary genetic strategy we provide a detailed protocol for neural circuit tracing in mice that express complementary transsynaptic tracers after Cre-mediated recombination. Because cell-specific tracer production is genetically encoded, our experimental approach is suitable to study the formation and maturation of neural circuitry during murine embryonic brain development at a single cell resolution.
19:57
The Use of Trace Eyeblink Classical Conditioning to Assess Hippocampal Dysfunction in a Rat Model of Fetal Alcohol Spectrum Disorders
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Cited by 4 •
2017
Trace eyeblink classical conditioning (ECC) was used to assess hippocampal-dependent associative learning in adult rats that were administered a high concentration (11.9% v/v) of alcohol during early neonatal brain development. In general, ECC procedures are sound diagnostic tools for detecting brain dysfunction across many psychological and biomedical settings.
13:06
Viral Tracing of Genetically Defined Neural Circuitry
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Cited by 10 •
2012
A method of tracing synaptically connected neurons is described. We use TVA specificity of an upstream cell to probe whether a cell population of interest receives synaptic input from genetically defined cell types.
07:48
A Method for Lineage Tracing of Corneal Cells Using Multi-color Fluorescent Reporter Mice
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Cited by 15 •
2015
In this article we describe the principles for designing and performing a multi-color lineage tracing experiment using R26R-Confetti mice. We provide a specific protocol for tracking corneal epithelial cells which can be modified for other tissues of interest.
FAQs
The interval prevents the conditioned stimulus and unconditioned stimulus from being continuously present together. Learning therefore depends on retaining information about the earlier conditioned stimulus until the unconditioned stimulus occurs. This makes performance sensitive to processes that preserve event information across time, rather than merely detecting simultaneous stimulation.
In this arrangement, the conditioned stimulus has already ended when the unconditioned stimulus begins. The learner must therefore connect two separated events instead of relying only on their overlap. This distinction allows behavioral studies to examine how temporal separation changes associative learning and the contribution of memory between events.
Timing determines the length of the stimulus-free gap, while attention affects whether the organism registers the predictive conditioned stimulus. Memory then helps preserve that information until the unconditioned stimulus appears. Together, these processes influence whether repeated pairings produce a conditioned response when the conditioned stimulus is later presented alone.
A conditioned response to the conditioned stimulus alone indicates that the organism has learned its predictive relationship with the later unconditioned stimulus. In trace conditioning, that response is especially informative because the two events were separated. Researchers can therefore use performance to study whether delayed associations were formed and retained.
Training begins by presenting the conditioned stimulus, ending it, and then delivering the unconditioned stimulus after the brief stimulus-free interval. Researchers repeat this pairing across trials, then present the conditioned stimulus without the unconditioned stimulus. The resulting response provides a behavioral indication of whether the delayed association developed.
Researchers choose this procedure when they want to examine learning that requires information to persist across time. Because the predictive cue ends before the outcome begins, the design is useful for investigating timing, attention, memory, and delayed associations. It can also support comparisons across different organisms and experimental settings.
The procedure offers a way to examine whether different organisms can learn relationships between events separated by a stimulus-free interval. Comparing conditioned responses across species or experimental settings can reveal variation in timing, attention, memory, and delayed association processes. Its value lies in connecting observable behavior with the processes that support learning across time.