Source 1primary paper2023MED
Toolkit/early bar-release impulsivity task
early bar-release impulsivity task
Also known as: touch-sensitive bar hold task
Taxonomy: Technique Branch / Method. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
Impulsivity was modeled by the subjects' inability to maintain hold of a touch-sensitive bar until presentation of an imperative signal.
Usefulness & Problems
Why this is useful
This task measures impulsive behavior as failure to keep holding a touch-sensitive bar until an imperative signal appears. Early bar releases are interpreted in the abstract as indicating impulsivity.; behavioral measurement of impulsive responding in rhesus monkeys
Source:
This task measures impulsive behavior as failure to keep holding a touch-sensitive bar until an imperative signal appears. Early bar releases are interpreted in the abstract as indicating impulsivity.
Source:
behavioral measurement of impulsive responding in rhesus monkeys
Problem solved
It gives the study a behavioral readout for testing whether unilateral caudate suppression increases impulsive behavior.; operationalizes impulsivity as early release failures before an imperative signal
Source:
It gives the study a behavioral readout for testing whether unilateral caudate suppression increases impulsive behavior.
Source:
operationalizes impulsivity as early release failures before an imperative signal
Problem links
operationalizes impulsivity as early release failures before an imperative signal
LiteratureIt gives the study a behavioral readout for testing whether unilateral caudate suppression increases impulsive behavior.
Source:
It gives the study a behavioral readout for testing whether unilateral caudate suppression increases impulsive behavior.
Published Workflows
Objective: Test whether experimentally induced unilateral suppression of the ventral caudate nucleus in rhesus monkeys produces impulsive behavior comparable to the asymmetry-associated phenotype described in humans.
Why it works: The study uses two independent suppression methods at the same caudate site and reads out behavior with an explicit impulsivity task, so convergent increases in early bar releases support a causal link between unilateral caudate suppression and impulsive behavior.
unilateral suppression of ventral caudate activityinduction of functional asymmetry in the caudate nucleuslocal muscimol infusionviral hM4Di DREADD expressionDREADD actuator administrationbehavioral bar-hold assay
Taxonomy & Function
Primary hierarchy
Technique Branch
Method: A concrete measurement method used to characterize an engineered system.
Techniques
Functional AssayTarget processes
recombinationImplementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationoperating role: sensor
The assay requires a touch-sensitive bar and a task in which subjects must withhold release until a signal is presented.; requires a touch-sensitive bar and an imperative signal-based task structure
The abstract does not establish whether this task uniquely isolates one subtype of impulsivity beyond the reported motor/early-release phenotype.; the abstract only supports this task as a model of impulsivity and does not resolve broader subtype mapping
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
Impulsivity was modeled as inability to maintain hold of a touch-sensitive bar until presentation of an imperative signal.
Impulsivity was modeled by the subjects' inability to maintain hold of a touch-sensitive bar until presentation of an imperative signal.
Clozapine N-oxide and deschloroclozapine activate hM4Di DREADD to suppress neuronal activity.
Clozapine N-oxide and deschloroclozapine activate the DREADD to suppress neuronal activity.
Both local muscimol infusion and hM4Di DREADD-based chemogenetic suppression increased the rate of early bar releases.
Both methods of suppression, pharmacological and chemogenetic, increased the rate of early bar releases, a behavior we interpret to indicate impulsivity.
Approval Evidence
1 source2 linked approval claimsfirst-pass slug early-bar-release-impulsivity-task
Impulsivity was modeled by the subjects' inability to maintain hold of a touch-sensitive bar until presentation of an imperative signal.
Source:
assay definitionsupports
Impulsivity was modeled as inability to maintain hold of a touch-sensitive bar until presentation of an imperative signal.
Impulsivity was modeled by the subjects' inability to maintain hold of a touch-sensitive bar until presentation of an imperative signal.
Source:
tool effectsupports
Both local muscimol infusion and hM4Di DREADD-based chemogenetic suppression increased the rate of early bar releases.
Both methods of suppression, pharmacological and chemogenetic, increased the rate of early bar releases, a behavior we interpret to indicate impulsivity.
Source:
Comparisons
Source-stated alternatives
No alternative behavioral assay is explicitly named in the abstract.
Source:
No alternative behavioral assay is explicitly named in the abstract.
Source-backed strengths
provides a concrete behavioral readout used to compare two suppression methods
Source:
provides a concrete behavioral readout used to compare two suppression methods
Compared with barcoded Cre recombinase mRNA barcode platform
early bar-release impulsivity task and barcoded Cre recombinase mRNA barcode platform address a similar problem space because they share recombination.
Shared frame: same top-level item type; shared target processes: recombination
Compared with calcium imaging
early bar-release impulsivity task and calcium imaging address a similar problem space because they share recombination.
Shared frame: same top-level item type; shared target processes: recombination
Relative tradeoffs: appears more independently replicated.
Compared with two-photon excitation microscopy
early bar-release impulsivity task and two-photon excitation microscopy address a similar problem space because they share recombination.
Shared frame: same top-level item type; shared target processes: recombination
Strengths here: looks easier to implement in practice.
Ranked Citations
- 1.