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Mirror neurons are generally described as a neural substrate hosting shared representations of actions, by simulating or 'mirroring' the actions of others onto the observers' own motor system. Since single neuron recordings are rarely feasible in humans, it has been argued that cross-modal multi-variate pattern analysis (MVPA) of non-invasive fMRI data is a suitable technique to investigate common coding of observed and executed actions, allowing researchers to infer the presence of mirror neurons in the human brain. In an effort to close the gap between monkey electrophysiology and human fMRI data with respect to the mirror neuron system, here we tested this proposal for the first time in the monkey. Rhesus monkeys either performed reach-and-grasp or reach-and-touch motor acts with their right hand in the dark or observed videos of human actors performing similar motor acts. Unimodal decoding showed that both executed or observed motor acts could be decoded from numerous brain regions. Specific portions of rostral parietal, premotor and motor cortices, previously shown to house mirror neurons, in addition to somatosensory regions yielded significant asymmetric, action-specific cross-modal decoding. These results validate the use of cross-modal multi-variate fMRI analyses to probe the representations of own and others' actions in the primate brain and support the proposed mapping of others' actions onto the observer's own motor cortices.
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Research has shown that observed actions are represented in the motor system, leading to automatic imitative responses. However, in social life, we often see multiple persons acting together. Here, we...
Reacting faster to the behaviour of others provides evolutionary advantages. Reacting to unpredictable events takes hundreds of milliseconds. Understanding where and how the brain represents what acti...
Detecting relationships between our own actions and the subsequent actions of others is critical for our social behavior. Self-actions differ from those of others in terms of action kinematics, body i...
Recent studies have documented that the hand's ability to perform actions affects the visual processing and attention for objects near the hand, suggesting that actions may have specific effects on vi...
The RF receive coil array has become increasingly vital in current MR imaging practice due to its extended spatial coverage, maintained high SNR, and improved capability of accelerating data acquisiti...
The aim of the present protocol is to prove if the observed actions (AOb) will improve the cervical range of motion (CROM) in patients with non-specific chronic neck pain (CNP). This study...
This project aims at understanding better the role of the frontal lobe of the brain in our capacity to perceive visual information consciously, and also, in our capacity to perceive others...
The observation of actions and motor imagery has demonstrated the activation of certain mechanisms similar to those that occur during active movement, which could induce immediate changes ...
This study tests the effectiveness of exposure therapy for fear of spiders as enhanced by the use of antagonistic or opposite actions during treatment. The goal of the study is to compare ...
A Phase 3 Study of A-101 Topical Solution Applied Twice a Week in Subjects with Common Warts
A subfamily of the Old World monkeys, CERCOPITHECIDAE, that inhabits the forests of Africa and Asia. The genera COLOBUS (Procolobus; colobus), Nasalis (proboscis monkey), Presbytis (Semnopithecus; leaf monkey), Pygathrix (Rhinopithecus; snub-nosed monkey), and Simias (pig-tailed langur) all belong to this subfamily.
One of the four types of brain waves seen on EEG characterized by a high amplitude and a frequency of 4 Hz and below. They are considered the "deep sleep waves" observed during sleep in dreamless states, infancy, and in some brain disorders.
Neurons that fire when an animal acts or observes the same action of another thus coding the motor response. They were originally discovered in the premotor and parietal cortex of the monkey and studies have shown that neurons that have a similar mechanism are present in humans. Mirror neurons are theorized to be related to social cognition.
a genus of Old World monkeys of the family CERCOPITHECINAE that inhabit the forests and savannas of Africa. It contains only one species, ERYTHROCEBUS PATAS, also known as the patas monkey or red monkey.
A species of the genus ERYTHROCEBUS, subfamily CERCOPITHECINAE, family CERCOPITHECIDAE. It inhabits the flat open arid country of Africa. It is also known as the patas monkey or the red monkey.