Related Experiment Video
Updated: Apr 7, 2026
11:54
Real-Time Proxy-Control of Re-Parameterized Peripheral Signals using a Close-Loop Interface
Published on: May 8, 2021
5.3K
Causative role of left aIPS in coding shared goals during human-avatar complementary joint actions.
Lucia M Sacheli1, Matteo Candidi1, Vanessa Era1
11] Department of Psychology, University of Rome 'Sapienza', Rome I-00185, Italy [2] IRCCS, Fondazione Santa Lucia, Rome I-00179, Italy.
Nature Communications
|July 9, 2015
Summary
Predicting partner actions during complementary movements relies on the anterior intraparietal sulcus (aIPS). Inhibiting aIPS impairs coordination, highlighting its role in understanding shared goals during human-computer interaction.
Area of Science:
- Neuroscience
- Cognitive Science
- Motor Control
Background:
- Successful motor interactions depend on anticipating partners' actions for predictive movement adjustments.
- Neural basis of predicting action goals during passive observation is known, but not during active, complementary interactions.
Purpose of the Study:
- Investigate the causal role of higher-order motor cortical regions in predicting and adapting to others' actions during active, non-imitative interactions.
- Identify critical neural substrates supporting interpersonal coordination in complementary tasks.
Main Methods:
- Utilized continuous Theta Burst Stimulation (cTBS), a non-invasive inhibitory brain stimulation technique.
- Developed a novel human-avatar interaction task to assess complementary actions.
- Applied cTBS to specific higher-order motor cortical regions, including the anterior intraparietal sulcus (aIPS) and ventral premotor cortex.
Main Results:
- Inhibition of the left anterior intraparietal sulcus (aIPS) selectively impaired performance in complementary interactions.
- Inhibition of the ventral premotor cortex did not significantly affect performance in these interactions.
- Demonstrated a causal link between aIPS function and the ability to coordinate actions with a partner in a non-imitative context.
Conclusions:
- The anterior intraparietal sulcus (aIPS) plays a crucial role in coding 'shared goals' during complementary interactions.
- aIPS integrates predictions of one's own and others' complementary actions, extending beyond coding observed and executed action goals.
- Findings reveal a critical neural substrate for predictive interpersonal motor coordination in higher-order motor cortex.
Related Concept Videos
01:24Muscle Coordination and Action
3.7K
Muscle coordination is a complex and finely tuned process essential for smooth and purposeful movements like flexion, extension, adduction, abduction, and rotation. The human body orchestrates the actions of various muscles working in concert, each with a specific role. Four functional types describe how muscles work together: agonist, antagonist, synergist, and fixator.
Agonists
Agonist muscles, often called prime movers, are the primary muscles responsible for producing a specific movement....
Agonists
Agonist muscles, often called prime movers, are the primary muscles responsible for producing a specific movement....
3.7K
01:29Impression Management Techniques III: Aligning Actions
212
Aligning actions are communicative strategies individuals employ to maintain social harmony and preserve personal identity in the face of potential disruptions to social norms. These actions are particularly important in managing social impressions when one's behavior might be seen as inappropriate, incompetent, or morally questionable.Types of Aligning ActionsThe three principal types of aligning actions are disclaimers, accounts, and apologies.DisclaimersDisclaimers are preventive; they are...
212
01:09Functional Classification of Joints
9.1K
Functional Classification of Joints
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An...
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An...
9.1K
01:23Propagation of Action Potentials
14.9K
The propagation of an action potential refers to the process by which a nerve impulse, or "action potential," travels along a neuron.
Neurons (nerve cells) have a resting membrane potential, with a slightly negative charge inside compared to outside. This is maintained by ion channels, such as sodium (Na+) and potassium (K+) channels, which control the flow of ions. When a stimulus, like a touch or a signal from another neuron, triggers the neuron, sodium channels open, allowing sodium ions to...
Neurons (nerve cells) have a resting membrane potential, with a slightly negative charge inside compared to outside. This is maintained by ion channels, such as sodium (Na+) and potassium (K+) channels, which control the flow of ions. When a stimulus, like a touch or a signal from another neuron, triggers the neuron, sodium channels open, allowing sodium ions to...
14.9K
01:21Association Areas of the Cortex
10.6K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
10.6K
01:06Fixed Action Patterns
18.2K
A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
18.2K