scholarly journals Mirror neurons precede non-mirror neurons during action execution

2019 ◽  
Vol 122 (6) ◽  
pp. 2630-2635
Author(s):  
Kevin A. Mazurek ◽  
Marc H. Schieber
Keyword(s):  
Mirror Neurons ◽  
Markov Models ◽  
Action Observation ◽  
Mirror Neuron ◽  
Leading Edge ◽  
Population Level ◽  
State Transitions ◽  
Neuron Activity ◽  
Action Execution ◽  
Neuron Populations

Mirror neurons are thought to represent an individual’s ability to understand the actions of others by discharging as one individual performs or observes another individual performing an action. Studies typically have focused on mirror neuron activity during action observation, examining activity during action execution primarily to validate mirror neuron involvement in the motor act. As a result, little is known about the precise role of mirror neurons during action execution. In this study, during execution of reach-grasp-manipulate movements, we found activity of mirror neurons generally preceded that of non-mirror neurons. Not only did the onset of task-related modulation occur earlier in mirror neurons, but state transitions detected by hidden Markov models also occurred earlier in mirror neuron populations. Our findings suggest that mirror neurons may be at the forefront of action execution. NEW & NOTEWORTHY Mirror neurons commonly are thought to provide a neural substrate for understanding the actions of others, but mirror neurons also are active during action execution, when additional, non-mirror neurons are active as well. Examining the timing of activity during execution of a naturalistic reach-grasp-manipulate task, we found that mirror neuron activity precedes that of non-mirror neurons at both the unit and the population level. Thus mirror neurons may be at the leading edge of action execution.

scholarly journals fMRI Adaptation between Action Observation and Action Execution Reveals Cortical Areas with Mirror Neuron Properties in Human BA 44/45

2016 ◽  
Vol 10 ◽  
Author(s):  
Stephan de la Rosa ◽  
Frieder L. Schillinger ◽  
Heinrich H. Bülthoff ◽  
Johannes Schultz ◽  
Kamil Uludag
Keyword(s):  
Action Observation ◽  
Mirror Neuron ◽  
Action Execution ◽  
Cortical Areas ◽  
Fmri Adaptation

What happened to Homo habilis? (Language and mirror neurons)

1998 ◽  
Vol 21 (4) ◽  
pp. 527-528 ◽  
Author(s):  
Giacomo Rizzolatti
Keyword(s):  
Mirror Neurons ◽  
Language Evolution ◽  
Action Observation ◽  
Premotor Cortex ◽  
Physiological Data ◽  
Action Execution ◽  
Homo Habilis ◽  
Target Article ◽  
Linguistic Functions ◽  
Evolutionary Continuity

The evolutionary continuity between the prespeech functions of premotor cortex and its new linguistic functions, the main thesis of MacNeilage's target article, is confirmed by the recent discovery of “mirror” neurons in monkeys and a corresponding action-observation/action-execution matching system in humans. Physiological data (and other considerations) appear to indicate, however, that brachiomanual gestures played a greater role in language evolution than MacNeilage would like to admit.

scholarly journals Corticospinal mirror neurons

2014 ◽  
Vol 369 (1644) ◽  
pp. 20130174 ◽  
Author(s):  
A. Kraskov ◽  
R. Philipp ◽  
S. Waldert ◽  
G. Vigneswaran ◽  
M. M. Quallo ◽  
...  
Keyword(s):  
Mirror Neurons ◽  
Primary Motor Cortex ◽  
Mirror Neuron System ◽  
Action Observation ◽  
Premotor Cortex ◽  
Mirror Neuron ◽  
Considerable Proportion ◽  
Emg Activity ◽  
Cortex Area ◽  
Similar Range

Here, we report the properties of neurons with mirror-like characteristics that were identified as pyramidal tract neurons (PTNs) and recorded in the ventral premotor cortex (area F5) and primary motor cortex (M1) of three macaque monkeys. We analysed the neurons’ discharge while the monkeys performed active grasp of either food or an object, and also while they observed an experimenter carrying out a similar range of grasps. A considerable proportion of tested PTNs showed clear mirror-like properties (52% F5 and 58% M1). Some PTNs exhibited ‘classical’ mirror neuron properties, increasing activity for both execution and observation, while others decreased their discharge during observation (‘suppression mirror-neurons’). These experiments not only demonstrate the existence of PTNs as mirror neurons in M1, but also reveal some interesting differences between M1 and F5 mirror PTNs. Although observation-related changes in the discharge of PTNs must reach the spinal cord and will include some direct projections to motoneurons supplying grasping muscles, there was no EMG activity in these muscles during action observation. We suggest that the mirror neuron system is involved in the withholding of unwanted movement during action observation. Mirror neurons are differentially recruited in the behaviour that switches rapidly between making your own movements and observing those of others.

External Behavior Monitoring Mirrors Internal Behavior Monitoring

2005 ◽  
Vol 19 (4) ◽  
pp. 281-288 ◽  
Author(s):  
Alan T. Bates ◽  
Tina P. Patel ◽  
Peter F. Liddle
Keyword(s):  
Observational Learning ◽  
Error Detection ◽  
Mirror Neurons ◽  
Action Observation ◽  
Event Related Potential ◽  
Action Execution ◽  
Error Related Negativity ◽  
Behavior Monitoring ◽  
External Behavior ◽  
The Brain

Abstract: The discovery of mirror neurons in monkeys has reshaped thinking about how the brain processes observed actions. There is growing evidence that these neurons, which show similar firing patterns for action execution and observation, also exist in humans. Many parts of the motor system required to perform a specific action are activated during the observation of the same action. We hypothesized that behavior monitoring that occurs during action execution is mirrored during action observation. To test this, we measured error negativity/error-related negativity (Ne/ERN) while participants performed and observed a Go/NoGo task. The Ne/ERN is an event-related potential that is thought to reflect an error detection process in the brain. In addition to finding an Ne/ERN for performed errors, we found that an Ne/ERN was also generated for observed errors. The Ne/ERN for observed errors may reflect a system that plays a key role in imitation and observational learning.

scholarly journals Neonatal imitation and an epigenetic account of mirror neuron development

2014 ◽  
Vol 37 (2) ◽  
pp. 220-220 ◽  
Author(s):  
Elizabeth A. Simpson ◽  
Nathan A. Fox ◽  
Antonella Tramacere ◽  
Pier F. Ferrari
Keyword(s):  
Individual Differences ◽  
Mirror Neurons ◽  
Mirror Neuron ◽  
Population Level ◽  
Neuron Development ◽  
False Dichotomy

AbstractNeonatal imitation should not exclusively be considered at the population-level; instead, we propose that inconsistent findings regarding its occurrence result from important individual differences in imitative responses. We also highlight what we consider to be a false dichotomy of genetic versus learning accounts of the development of mirror neurons, and instead suggest a more parsimonious epigenetic perspective.

scholarly journals The Implementation of Action Observation Therapy in Virtual Worlds

2021 ◽  
Author(s):  
◽  
Nicholas Wellwood
Keyword(s):  
Virtual Worlds ◽  
Mirror Neurons ◽  
Action Observation ◽  
Mirror Neuron ◽  
Extended Period ◽  
Upper Limb Rehabilitation ◽  
Repetitive Nature ◽  
Full Benefit ◽  
Limb Rehabilitation ◽  
Multiple Conditions

<p>Upper limb rehabilitation after stroke is vital to the recovery of a patient’s range of motion, dexterity and strength (Jauch et al, 2010, p. 824). Rehabilitative practises are diverse and met with varying levels of success (Brewer et al, 2012, p. 11). This research is concerned with action observation therapy and its potential for neural reorganization through consistent repetition of prescribed physiotherapy exercises.  Action observation utilizes mirror neurons to stimulate neural strengthening and recovery (Ertelt et al, 2007, p. 172). The observation of an expert completion of an action by either the patient, a representation of the patient or someone else fires the corresponding mirror neuron (Fogassi et al, 2005, p. 662). Mirror neurons’ ability to be fired under multiple conditions allow a patient who is unable to complete an action, in this case a physiotherapy exercise, to still receive the neural benefit just by observing the action (Ertelt et al, 2007, p. 165).  In collaboration with sensory devices in a virtual medium, action observation will be used to create a dynamic and engaging simulation with the intent of providing a physiotherapy experience that progresses in difficulty. Incremental difficulty will ensure patients are being pushed to their limits in a controlled and monitored environment (IJsselsteijn, 2007, p. 27).  Neural reorganization requires a large number of repetitions of exercises over extended periods of time creating rehabilitative experiences that have traditionally been tedious and mundane (Merians et al, 2002, p. 898; O’Dell, Lin & Harrison, 2009, p. 55). Gamification of traditional methods can engage the patient over an extended period of time By masking the repetitive nature of the exercises with a fun experience, patients can receive the full benefit of the treatment while performing enjoyable tasks (Muzzaffa et al, 2013, p. 69).</p>

scholarly journals The Implementation of Action Observation Therapy in Virtual Worlds

2021 ◽  
Author(s):  
◽  
Nicholas Wellwood
Keyword(s):  
Virtual Worlds ◽  
Mirror Neurons ◽  
Action Observation ◽  
Mirror Neuron ◽  
Extended Period ◽  
Upper Limb Rehabilitation ◽  
Repetitive Nature ◽  
Full Benefit ◽  
Limb Rehabilitation ◽  
Multiple Conditions

<p>Upper limb rehabilitation after stroke is vital to the recovery of a patient’s range of motion, dexterity and strength (Jauch et al, 2010, p. 824). Rehabilitative practises are diverse and met with varying levels of success (Brewer et al, 2012, p. 11). This research is concerned with action observation therapy and its potential for neural reorganization through consistent repetition of prescribed physiotherapy exercises.  Action observation utilizes mirror neurons to stimulate neural strengthening and recovery (Ertelt et al, 2007, p. 172). The observation of an expert completion of an action by either the patient, a representation of the patient or someone else fires the corresponding mirror neuron (Fogassi et al, 2005, p. 662). Mirror neurons’ ability to be fired under multiple conditions allow a patient who is unable to complete an action, in this case a physiotherapy exercise, to still receive the neural benefit just by observing the action (Ertelt et al, 2007, p. 165).  In collaboration with sensory devices in a virtual medium, action observation will be used to create a dynamic and engaging simulation with the intent of providing a physiotherapy experience that progresses in difficulty. Incremental difficulty will ensure patients are being pushed to their limits in a controlled and monitored environment (IJsselsteijn, 2007, p. 27).  Neural reorganization requires a large number of repetitions of exercises over extended periods of time creating rehabilitative experiences that have traditionally been tedious and mundane (Merians et al, 2002, p. 898; O’Dell, Lin & Harrison, 2009, p. 55). Gamification of traditional methods can engage the patient over an extended period of time By masking the repetitive nature of the exercises with a fun experience, patients can receive the full benefit of the treatment while performing enjoyable tasks (Muzzaffa et al, 2013, p. 69).</p>

scholarly journals The Activation of the Mirror Neuron System during Action Observation and Action Execution with Mirror Visual Feedback in Stroke: A Systematic Review

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Jack J. Q. Zhang ◽  
Kenneth N. K. Fong ◽  
Nandana Welage ◽  
Karen P. Y. Liu
Keyword(s):  
Motor Cortex ◽  
Visual Feedback ◽  
Primary Motor Cortex ◽  
Mirror Neuron System ◽  
Action Observation ◽  
Mirror Neuron ◽  
Action Execution ◽  
Neuron System ◽  
Mu Suppression ◽  
Mirror Visual Feedback

Objective. To evaluate the concurrent and training effects of action observation (AO) and action execution with mirror visual feedback (MVF) on the activation of the mirror neuron system (MNS) and its relationship with the activation of the motor cortex in stroke individuals. Methods. A literature search using CINAHL, PubMed, PsycINFO, Medline, Web of Science, and SCOPUS to find relevant studies was performed. Results. A total of 19 articles were included. Two functional magnetic resonance imaging (fMRI) studies reported that MVF could activate the ipsilesional primary motor cortex as well as the MNS in stroke individuals, whereas two other fMRI studies found that the MNS was not activated by MVF in stroke individuals. Two clinical trials reported that long-term action execution with MVF induced a shift of activation toward the ipsilesional hemisphere. Five fMRI studies showed that AO activated the MNS, of which, three found the activation of movement-related areas. Five electroencephalography (EEG) studies demonstrated that AO or MVF enhanced mu suppression over the sensorimotor cortex. Conclusions. MVF may contribute to stroke recovery by revising the interhemispheric imbalance caused by stroke due to the activation of the MNS. AO may also promote motor relearning in stroke individuals by activating the MNS and motor cortex.

scholarly journals No evidence for somatosensory attenuation during action observation of self-touch

2021 ◽  
Author(s):  
Konstantina Kilteni ◽  
Patrick Engeler ◽  
Ida Boberg ◽  
Linnea Maurex ◽  
H. Henrik Ehrsson
Keyword(s):  
Visual Information ◽  
Mirror Neurons ◽  
Mirror Neuron System ◽  
Action Observation ◽  
Mirror Neuron ◽  
Body Part ◽  
Motor Command ◽  
Voluntary Action ◽  
Tactile Stimuli ◽  
Motor Representations

AbstractThe discovery of mirror neurons in the macaque brain in the 1990s triggered investigations on putative human mirror neurons and their potential functionality. The leading proposed function has been action understanding: accordingly, we understand the actions of others by ‘simulating’ them in our own motor system through a direct matching of the visual information to our own motor programs. Furthermore, it has been proposed that this simulation involves the prediction of the sensory consequences of the observed action, similar to the prediction of the sensory consequences of our executed actions. Here, we tested this proposal by quantifying somatosensory attenuation behaviorally during action observation. Somatosensory attenuation manifests during voluntary action and refers to the perception of self-generated touches as less intense than identical externally generated touches because the self-generated touches are predicted from the motor command. Therefore, we reasoned that if an observer simulates the observed action and, thus, he/she predicts its somatosensory consequences, then he/she should attenuate tactile stimuli simultaneously delivered to his/her corresponding body part. In three separate experiments, we found a systematic attenuation of touches during executed self-touch actions, but we found no evidence for attenuation when such actions were observed. Failure to observe somatosensory attenuation during observation of self-touch is not compatible with the hypothesis that the putative human mirror neuron system automatically simulates the observed action. In contrast, our findings emphasize a sharp distinction between the motor representations of self and others.

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