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#motorcontrol

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Max Lab UW Seattle

📣 🥁 🚨Tuesday Dec 10, 2 pm PT,
Elise LeBovidge presents her PhD dissertation "Sensory modulation during speech movement planning in stuttering and nonstuttering adults"
 
Follow live via Zoom: 
washington.zoom.us/j/990737899

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#speech#MotorControl#stuttering
Continued thread
Likely Jan Lukas

That said, when my joints are flaring, my hands may be able to make fine *motions* but not control fine motor movements with a pen or pencil.

Despite occasional bouts of promising skills sketching or doing caligraphy, most of my life, I have relied on keyboards and mice to write and draw.

I've treasured the occasional periods where I *could* write by hand, but mostly I can't.

4/x

#Motion
#MotorControl
#arthritis

Joel Snyder

Posting on behalf of my colleagues on the editorial board of JEP:HPP.

Call for Papers: Perspectives on Journal of Experimental Psychology: Human Perception and Performance

Important dates:
Letter of intent submission deadline: June 15, 2024

Invited manuscript submission deadline: Sept 15, 2024

Editor:
Jelena Ristic

Background:
In 2025, the Journal of Experimental Psychology: Human Perception and Performance will celebrate its 50th birthday. This is a momentous occasion for the journal which continues to serve as a pillar of the field of experimental psychology and cognitive psychology/neuroscience. Indeed, some of the most important and pioneering findings have been published in JEP: HPP and have in many ways shaped how we think about cognition today.

To mark this occasion, in addition to invited updated reviews on several of the most cited JEP:HPP papers and perspectives of the editors, we are also inviting you, the readers, to send us your perspectives on JEP: HPP.

Details:
We are interested in receiving proposals for 1,000-word Perspective articles from JEP: HPP readers (who may also be authors) on the topic(s) of how an article, a series of articles, or general ideas published in JEP: HPPhave shaped/changed/influenced their research or academic development. We are also interested in receiving proposals on topics other than these, for instance concerning the various roles JEP: HPP can play for the next 50 years.

We aim to start publishing the Perspectives quarterly in 2025.

If you are interested in contributing a Perspective, let us know by June 15, 2024, by writing to the Associate Editor Jelena Ristic at jelena.ristic@mcgill.ca (with “Perspective proposal” in the subject line). Please include the proposed topic and a brief outline for your proposed article.

#psychology#perception#visual
Alessandro D'Ausilio

#NewPaperNeuro #neuroscience #motorcontrol

So glad to announce a new paper entitled "The microstructure of intra- and interpersonal coordination" by Giovanni Nazzaro, Marco Emanuele, Julien Laroche, Chiara Esposto, Luciano Fadiga, Me, and Alice Tomassini

Here we follow a new line of research on sub-movements, i.e. recurrent speed pulses (2-3 Hz), which perhaps reflect intermittent feedback-based motor adjustments.

Our previous work has shown that sub-movements are non-trivially coordinated between interacting individuals. This potentially opens a new window into the implicit mechanics of behavioural co-ordination (link below).

The new study investigates whether submovement coordination is organised differently between and within individuals in a series of bimanual tasks alone or in pairs, with or without visual feedback.

We conclude that the microstructure of movement reveals common principles governing the dynamics of sensorimotor control to achieve both intra- and interpersonal coordination.

New paper: royalsocietypublishing.org/doi

Old one:
sciencedirect.com/science/arti

Alessandro D'Ausilio

I am pleased to announce that we have finally come to the conclusion of a work begun a long time ago.

It is a historical review of human motor invariants in action execution. The article contains more than 350 references and is followed by 7 comments from esteemed colleagues (+ our response).

In essence, it contains all the context and background to understand why we believe that action perception is fundamentally constrained by the way we plan and produce actions.

sciencedirect.com/science/arti

#neuroscience#motorcontrol#neurophysiology
Alessandro D'Ausilio

It amazes me when I see neurotechnological solutions that allow fundamental questions to be answered in a completely new way.

Here is a recent Neuron paper:
pubmed.ncbi.nlm.nih.gov/373212

An extract:
"...novel approaches, including long-term underwater neural recording in freely swimming fish, to examine a substantially more complex (and realistic) version of the reafference cancellation problem in the active electrosensory system. Our data and modeling suggest that the cerebellum-like circuitry of the ELL [electrosensory lobe] achieves reafference cancellation by combining motor-related signals with environmental information derived from spatially distributed electrosensory input, providing insight into the longstanding question of how forward models are implemented by cerebellar circuitry."

#neuroscience #motorcontrol #neurophysiology @neuroscience

PubMedAn internal model for canceling self-generated sensory input in freely behaving electric fish - PubMedInternal models that predict the sensory consequences of motor actions are vital for sensory, motor, and cognitive functions. However, the relationship between motor action and sensory input is complex, often varying from one moment to another depending on the state of the animal and the environment …
*
Magdalena Gippert

Our paper "Prior movement of one arm facilitates motor adaptation in the other" is out @ #JNeurosci.

We show that the direction of a prior movement of the other arm is an effective cue to allow adaptation to interfering force fields. The brain seems to use kinematic information in learned sequences involving different body parts to adjust movements of the same sequence.

Also our data is pretty.

#motorlearning #motorcontrol #motoradaptation @sensorimotor @neuroscience
doi.org/10.1523/JNEUROSCI.2166

Simone Ranaldi

2 papers out in a day, wow! ieeexplore.ieee.org/document/1 #algorithms #electromyography #motorcontrol

ieeexplore.ieee.orgOptimal Identification of Muscle Synergies From Typical Sit-to-Stand Clinical Tests<italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Goal:</i> The goal of this manuscript is to investigate the optimal methods for extracting muscle synergies from a sit-to-stand test; in particular, the performance in identifying the modular structures from signals of different length is characterized. <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Methods:</i> Surface electromyography signals have been recorded from instrumented sit-to-stand trials. Muscle synergies have then been extracted from signals of different duration (i.e. 5 times sit to stand and 30 seconds sit to stand) from different portions of a complete sit-to-stand-to-sit cycle. Performance have then been characterized using cross-validation procedures. Moreover, an optimal method based on a modified Akaike Information Criterion measure is applied on the signal for selecting the correct number of synergies from each trial. <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Results:</i> Results show that it is possible to identify correctly muscle synergies from relatively short signals in a sit-to-stand experiment. Moreover, the information about motor control structures is identified with a higher consistency when only the sit-to-stand phase of the complete cycle is considered. <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Conclusions:</i> Defining a set of optimal methods for the extraction of muscle synergies from a clnical test such as the sit-to-stand is of key relevance to ensure the applicability of any synergy-related analysis in the clinical practice, without requiring knowledge of the technical signal processing methods and the underlying features of the signal.
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Alessandro D'Ausilio

#NewPaper #Neuroscience

Another cool #Anatomy paper on the connectivity between #BasalGanglia and the #Cerebellum

Here some quotes:

"Neural processing in the basal ganglia is critical for normal movement.
...
Many believe that the basal ganglia influence movement via thalamic projections to motor areas of the cerebral cortex and through projections to the cerebellum, which also projects to the motor cortex via the thalamus.
...
However, lesions that interrupt these thalamic pathways to the cortex have little effect on many movements, including limb movements.
...
In this report, we describe several brainstem pathways that connect basal ganglia output to the cerebellum via nucleus reticularis tegmenti pontis (NRTP).
...
The basal ganglia could ... alter movements via descending projections of the cerebellum.
...
Pathways through NRTP ... may underlie deficits associated with basal ganglia disease."

link.springer.com/article/10.1

SpringerLinkNucleus reticularis tegmenti pontis: a bridge between the basal ganglia and cerebellum for movement control - Experimental Brain ResearchNeural processing in the basal ganglia is critical for normal movement. Diseases of the basal ganglia, such as Parkinson’s disease, produce a variety of movement disorders including akinesia and bradykinesia. Many believe that the basal ganglia influence movement via thalamic projections to motor areas of the cerebral cortex and through projections to the cerebellum, which also projects to the motor cortex via the thalamus. However, lesions that interrupt these thalamic pathways to the cortex have little effect on many movements, including limb movements. Yet, limb movements are severely impaired by basal ganglia disease or damage to the cerebellum. We can explain this impairment as well as the mild effects of thalamic lesions if basal ganglia and cerebellar output reach brainstem motor regions without passing through the thalamus. In this report, we describe several brainstem pathways that connect basal ganglia output to the cerebellum via nucleus reticularis tegmenti pontis (NRTP). Additionally, we propose that widespread afferent and efferent connections of NRTP with the cerebellum could integrate processing across cerebellar regions. The basal ganglia could then alter movements via descending projections of the cerebellum. Pathways through NRTP are important for the control of normal movement and may underlie deficits associated with basal ganglia disease.
#Parkinson#MotorControl#MovementDisorders
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