Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 59 for “"Neural Representations"”.
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Hyperspectral image compression using implicit neural representations
… data. In this thesis, we develop several neural compression-based methods for hyperspectral images. Our methodology relies on transforming hyperspectral images into implicit neural representations (INR), specifically neural functions that establish a correspondence between coordinates and …
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Implicit neural representations for time-frequency signal processing
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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Neural representations used by brain regions underlying speech production
… These observations indicate that speech is neurally represented in multiple forms. This dissertation describes three studies exploring representations of speech used in different brain regions to produce speech. The first study investigated the motor units used to learn novel speech …
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Neural representations of pitch : role of peripheral frequency selectivity
Investigating the neural mechanisms underlying the perception of the pitch of harmonic complex tones is of great importance for many reasons. Changes in pitch convey melody in music, and the superposition of different pitches is the basis for harmony. Pitch has an important role in speech, where it …
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Neural representations of movement planning within the human prehension system
… we begin to have a better understanding of the neural mechanisms underlying the execution of object-directed movements, less is known about how exactly our brain makes the plan for action. Previous studies examining movement planning suggested that neuronal populations in parieto-frontal areas …
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Implicit Neural Representations for Multimedia Compression [Rappresentazioni neurali implicit per la Compressione di Multimedia]
Nelle rappresentazioni neurali implicite (INR) un segnale discreto viene interpretato come una funzione continua dalle coordinate ai campioni e una rete neurale viene poi allenata per approssimare questa funzione. I parametri della rete risultante possono essere compressi per ridurre la …
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A brain-machine interface for investigating neural representations of navigation in a virtual environment
Simultaneously recording behaviour and neural activity can only take researchers so far in understanding the function of different regions of the brain, and the neurons therein. Novel methods are required for probing further beyond standard correlational and knockout analysis. The activity of one …
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Neural Representation for robotics
… which lead to inaccurate or incomplete geometric representations. Neural representations have recently demonstrated exceptional capabilities in Novel View Synthesis (NVS), effectively handling many scenarios where conventional depth cameras struggle. Moreover, unlike traditional methods requiring …
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Neural Word Representations for Biomedical NLP
Word representations are mathematical objects which capture the semantic and syntactic properties of words in a way that is interpretable by machines. Recently, the encoding of word properties into a low-dimensional vector space using neural networks has become popular. Neural representations are …
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The Neural Processing of Face-like Stimuli
… emotional and social information, yet the neural mechanisms underlying their perception across different types of face-like stimuli remain incompletely understood. This dissertation will report an EEG - multivariate pattern analysis (MVPA) study that investigated how emotional expressions …
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Investigation of the multiple-demand network at multiple spatial scales
… by all three tasks also captured the underlying neural representations to a similar level in a separate criterion task. Chapter 4 investigated if task representations, as measured by multi-voxel patterns, were modified due to external motivation. The effect was limited to the cue phase and did …
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Understanding computation through low-dimensional dynamics with recurrent neural networks
… little insight into how they are realized in neural network models. Addressing this disconnect requires tools for better understanding neural representations and how they are used for cognitive computations. Here, I present work towards developing a dynamical systems framework for neural …
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Characterizing the spatiotemporal profile and the level of abstractness of action representations: neural decoding of magnetoencephalography (MEG) and functional magnetic resonance imaging (fMRI) data
… characterize the temporal dynamics of abstract representations of observed actions (Study 1 and 2), meaning that generalize across lower level dimensions, and to characterize the type of information encoded in the regions of the AON (Study 3). Specifically, in Study 1 we examined where in the …
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Cue competition and feature representation in a category learning task: an fMRI study
… the location and organization of the neural representations that develop for category features during overshadowing has not been previously examined in this context. The present experiment used representational similarity analyses (RSA), a method for interrogating representational …
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Thinking in patterns : representations in the neural basis of theory of mind
… Yet, we have little insight into how these neural substrates function at a computational level. This thesis lays the groundwork to address that question, both empirically and theoretically, first by demonstrating that functional neuroimaging can find behaviorally relevant features of mental …
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Learning, Consolidating, and Generalising Novel Morphology
… in supporting linguistic generalisation, the neural representations supporting its learning remain largely unexplored. This thesis addressed this gap by exploring the role of memory consolidation in morphological learning and generalisation. In three experiments, adult participants learned an …
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Anatomical Bases for Auditory Projections to Suprasylvian Visual Areas in the Cat Cerebral Cortex
How the neural representations of different sensory modalities transition from one to another is an unexplored issue of cortical organization. The present experiments addressed this problem by examining auditory projections to the lateral suprasylvian visual area (LSS) of the cat using …
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The Dissociation of Valence and Intensity Using Alliesthesia and Thermal Stimulation
… limited imaging studies of these models and the neural substrates are poorly understood. For example, it is not known if the neural representations for each dimension are discrete or shared. To overcome these limitations, we applied properties of alliesthesia, the phenomenon where the valence of …
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