Intra-Dimensional Extra Dimensional (IDED) Set Shift

SKU CS-958233

$12,999.99

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Cognitive flexibility assessment paradigm for evaluating attention set formation, maintenance, and shifting in laboratory animal models through systematic discrimination learning stages.

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Model fit: Mouse, Rat
SKU family: CS-958233
Shipping box: 65.0 x 36.0 x 27.0 cm
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Category: Behavioral Mazes
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Category: Behavioral Mazes

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The Intra-Dimensional Extra Dimensional (IDED) Set Shift is a cognitive flexibility assessment paradigm designed to evaluate attention set formation, maintenance, and shifting in laboratory animal models. This behavioral testing protocol measures an animal's ability to learn discrimination rules based on different perceptual dimensions and subsequently shift attention between these dimensions when task contingencies change.

The IDED paradigm systematically progresses through stages of increasing cognitive demand, beginning with simple discrimination learning and advancing through compound discrimination, reversal learning, intra-dimensional shifts, and finally extra-dimensional shifts. This progression allows researchers to isolate specific components of executive function, particularly the ability to overcome previously learned attention sets when environmental demands change. The protocol is widely used in translational neuroscience research to model cognitive inflexibility observed in various neuropsychiatric conditions.

How It Works

The IDED paradigm operates on the principle that animals naturally form attention sets when learning discrimination tasks involving multiple perceptual dimensions. During initial training, subjects learn to discriminate between stimuli that vary along multiple dimensions (such as shape, color, texture, or odor) but only one dimension is consistently rewarded. Through repeated trials, animals develop an attention set toward the relevant dimension while ignoring irrelevant dimensions.

The cognitive challenge emerges during the extra-dimensional shift phase, where the previously irrelevant dimension becomes the new basis for reward, requiring subjects to overcome their established attention set. This shift demands prefrontal cortex-mediated cognitive control to inhibit the previously learned rule and acquire a new discrimination strategy. The paradigm systematically controls for non-specific factors such as motor learning, motivation, and general discrimination ability by including control stages like simple discrimination, compound discrimination, and reversal learning.

Performance is measured by trials to criterion at each stage, with particular emphasis on the extra-dimensional shift phase where cognitive inflexibility manifests as perseverative responding to the previously relevant dimension. This allows researchers to quantify attention set formation strength and flexibility with high precision.

Features & Benefits

Systematic stage progression

Allows isolation of specific cognitive components and identification of the precise stage where deficits emerge

Multiple perceptual dimensions

Enables assessment of attention set formation across different sensory modalities and stimulus types

Standardized performance criteria

Provides objective, quantifiable measures of cognitive flexibility that are comparable across studies and laboratories

Control for non-cognitive factors

Distinguishes cognitive flexibility deficits from general learning impairments or motivational issues

Translational validity

Directly parallels human cognitive flexibility tasks, facilitating translation between preclinical and clinical research

Prefrontal cortex sensitivity

Specifically targets executive functions mediated by prefrontal cortex circuits relevant to neuropsychiatric disorders

Feature	This Product	Typical Alternative	Advantage
Cognitive Specificity	Systematically isolates attention set shifting from general behavioral flexibility through multi-stage progression	Single-stage reversal tasks assess general behavioral flexibility but cannot isolate specific cognitive components	Enables precise identification of the cognitive process underlying performance deficits
Translational Validity	Direct analog to human Wisconsin Card Sorting Task and Cambridge Neuropsychological Test Battery	Many animal cognitive tasks have limited correspondence to human executive function measures	Facilitates meaningful translation between preclinical findings and clinical populations
Control Conditions	Includes multiple control stages to isolate attention set shifting from confounding factors	Simpler paradigms often lack adequate controls for motivation, learning ability, and task switching	Ensures cognitive flexibility deficits are not due to general learning impairments or non-cognitive factors
Sensitivity to Brain Regions	Specifically sensitive to prefrontal cortex function and associated neural circuits	General cognitive tasks may involve multiple brain systems making interpretation difficult	Provides targeted assessment of brain regions most relevant to neuropsychiatric disorders

The IDED paradigm provides a comprehensive, well-controlled assessment of cognitive flexibility with strong translational validity and sensitivity to prefrontal cortex dysfunction. Its multi-stage design enables precise characterization of attention set formation and shifting capabilities.