Related Experiment Video
Updated: Jul 1, 2026
11:28
A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials
Published on: May 18, 2015
Summary
Behavioral regulation was studied in a fixed ratio lever-press task. Findings suggest response force variations offer feedback cues for controlling behavior.
Area of Science:
- Behavioral neuroscience
- Animal behavior studies
- Operant conditioning
Background:
- Reinforcement schedules significantly influence response characteristics.
- Understanding behavioral regulation is crucial for various psychological and neurological studies.
- Fixed ratio schedules are commonly used to study response patterns.
Purpose of the Study:
- To investigate the role of response force in behavioral regulation under a fixed ratio schedule.
- To explore whether variations in response force provide feedback cues for behavior control.
- To analyze the effects of reinforcement and unreinforced responses on response force.
Main Methods:
- Subjects were placed in a fixed ratio lever-press operant conditioning chamber.
- Response force was measured during reinforced and unreinforced lever presses.
- Data analysis focused on changes in response force following reinforcement and during extinction.
Main Results:
- A sharp decline in response force was observed immediately after reinforcement.
- A progressive increase in response force occurred over a series of unreinforced responses.
- Systematic variations in response force were evident throughout the experimental conditions.
Conclusions:
- Response force changes may serve as internal discriminative stimuli.
- Feedback from response force variations can contribute to behavioral regulation.
- These findings highlight a potential mechanism for response control in operant behavior.
More Related Videos
13:34High Throughput Traction Force Microscopy Using PDMS Reveals Dose-Dependent Effects of Transforming Growth Factor-β on the Epithelial-to-Mesenchymal Transition
Published on: June 1, 2019
08:05Cardiac Response to β-Adrenergic Stimulation Determined by Pressure-Volume Loop Analysis
Published on: May 19, 2021
Related Concept Videos
01:13Cell-matrix's Response to Mechanical Forces
In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue.
Anchoring junctions mechanically attach a cell to the...
Anchoring junctions mechanically attach a cell to the...
01:24Stress-Strain Diagram - Ductile Materials
The stress-strain relationship in ductile materials such as structural steel or aluminium is intricate and progresses through several stages. When a specimen is loaded, it initially exhibits a linear length increase, depicted by a steep straight line on the stress-strain diagram. It indicates the material is elastically deforming and will return to its original shape once unloaded. However, when a critical stress value is reached, plastic deformation begins. This stage sees substantial...
01:21Plastic Behavior
A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and reloaded.
01:23Poisson's Ratio
Poisson's ratio is a material property that indicates their stress response. It explains the connection between the elongation or compression a material undergoes in the direction of an applied force and the contraction or expansion it experiences perpendicular to that force. When a slender bar is loaded axially, it stretches in the direction of the force and contracts laterally. Poisson's ratio is the negative ratio of this lateral contraction to the axial elongation. The negative sign ensures...
01:15Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
01:19Impact Loading
Impact loading occurs when a moving object collides with a stationary structure, such as a rod with a uniform cross-sectional area fixed at one end. Under these conditions, the rod absorbs the kinetic energy from the striking object, leading to deformation and subsequent stress development. As the rod returns to its original position and reaches maximum stress, the absorbed energy, initially manifested as kinetic energy, transforms entirely into strain energy.
In cases of elastic deformation,...
In cases of elastic deformation,...