2*** Behavioral Assays

Vocabulary practice flashcards covering fundamental concepts, paradigms, procedures, and quantitative measurements in behavioral neuroscience assays.

Ethology

The scientific study of animal behavior, specifically focused on observing and establishing behaviors that occur naturally in an organism's environment.

Assay

A scientific procedure used to measure the presence, amount, or functional activity of a substance or biological process.

Behavioral Assay

An experimental method used to measure and analyze behavior in humans or animals under controlled laboratory conditions to observe how manipulations—such as genetic modifications, drug treatments, or environmental changes—affect specific behavioral outputs.

Running Wheel Assay

A motor behavioral assay that measures voluntary locomotor activity, quantifying variables such as time spent running, running speed, and total distance travelled through manual or automated recording.

Photobeam Breaks Assay

A motor activity assay that automatically quantifies an animal's locomotion and distance travelled by detecting the number of infrared light beams interrupted as the subject moves across an arena.

Open Field Test (Squares Crossed)

A motor and exploratory assay in which locomotor activity is measured by the number of delineated floor grid squares a rodent crosses within a set testing duration.

Elevated Plus Maze (EPM)

A behavioral assay used to assess anxiety-like behavior by recording the time spent in and entries into open versus closed arms; increased anxiety-like behavior is indicated by spending significantly less time in the open arms.

Forced Swim Test

A behavioral assay used to evaluate depression-like behavior in rodents by measuring the duration of immobility in an inescapable cylinder of water as an indicator of learned helplessness.

Hot Plate Test

A nociceptive (pain) behavioral assay that measures the latency for a rodent to respond to a thermal stimulus (indicated by jumping or licking hind paws), utilizing a predetermined cutoff time to prevent tissue damage.

Morris Water Maze

A spatial learning and memory task where a rodent must locate a submerged escape platform within a pool of opaque water, evaluated by latency to find the platform across trials and the directness of the swimming path.

Behavioral Sensitization

A form of non-associative learning characterized by a progressive increase in behavioral responsiveness (typically locomotor activity) following repeated, intermittent administrations of a drug, assessed by comparing initial-day to final-day responses.

Conditioned Place Preference (CPP)

A Pavlovian classical conditioning assay measuring drug reward and 'liking' by assessing whether an animal chooses to spend more time in an environment previously paired with a drug versus an environment paired with a vehicle when tested in a drug-free state.

Difference Score (CPP)

A quantitative metric in conditioned place preference calculated as the change in time spent in a specific compartment between test phases, represented as: $\text{Pretest Time} - \text{Post-test Time}$.

Preference Score (CPP)

A quantitative metric in conditioned place preference representing the ratio of time spent in the drug-paired compartment relative to the total time spent across all chambers during the test session.

Operant Drug Self-Administration

An operant conditioning paradigm in a Skinner box where an animal actively performs an action (such as pressing a lever) to deliver an intravenous infusion of a substance, allowing researchers to evaluate reinforcement, voluntary drug intake, and motivation while the subject is on the drug.

Intracranial Self-Stimulation (ICSS)

An operant conditioning assay where rodents perform a operant response (e.g., lever pressing) to deliver electrical pulses directly to brain reward centers such as the medial forebrain bundle (MFB), used to quantify reward sensitivity and reinforcement thresholds.

Drug Discrimination Assay

An operant conditioning assay assessing the internal, subjective psychoactive state produced by a substance; animals are trained to press one lever when administered vehicle and a different lever when administered a training drug, followed by testing whether a novel drug produces generalization to the training drug's subjective effects.