Post-graduate theses
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Identifier |
000457344 |
Title |
Population analysis of neural activity recorded from the macaque premotor cortex during action execution and observation |
Alternative Title |
Πληθυσμιακή ανάλυση νευρωνικής δραστηριότητας καταγεγραμμένης από τον προκινητικό φλοιό μακάκου κατά την εκτέλεση και παρατήρηση κινήσεων |
Author
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Χατζημιχαήλ, Κωνσταντίνος
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Thesis advisor
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Ράος, Βασίλειος
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Abstract |
Neurons that respond to self-performed actions as well as observed actions executed by
others, are called Mirror Neurons (MirNs). MirNs are assumed to mediate action understanding
and play a significant role in social behavior. However, fundamental questions about their
function, such as what kind of information they encode and whether executed and observed
actions elicit congruent activity, remain open. In this study, we attempted to tackle these issues
by analyzing neural data recorded from MirNs in the ventral and dorsal premotor cortex of
the macaque brain, during execution and observation of grasping actions. We used population
decoding methods to explore the neural code of MirNs and multiple linear regression models
to evaluate the hypothesis that MirNs encode action kinematics. Furthermore, we assessed
the congruency of the neural codes in the observation and execution conditions by applying
decoding methods combined with neural subspace analysis techniques. We found that the
code of MirNs for grip is dynamic and distributed to the population, that action kinematic
information is contained in MirN activity and that observation-execution congruency can be
found in the population codes. These findings challenge traditional views about MirNs and
call for further investigation of their basic properties.
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Language |
English |
Subject |
Action observation |
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Mirror neurons |
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Εκτέλεση κίνησης |
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Νευρόνες κάτοπτρα |
Issue date |
2023-07-28 |
Collection
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School/Department--School of Medicine--Department of Medicine--Post-graduate theses
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Type of Work--Post-graduate theses
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Permanent Link |
https://elocus.lib.uoc.gr//dlib/8/b/6/metadata-dlib-1689671658-106169-724.tkl
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Views |
395 |
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