Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Deep Learning the EEG Manifold for Phonological Categorization from
  Active Thoughts   Speech-related Brain Computer Interfaces (BCI) aim primarily at finding an
alternative vocal communication pathway for people with speaking disabilities.
As a step towards full decoding of imagined speech from active thoughts, we
present a BCI system for subject-independent classification of phonological
categories exploiting a novel deep learning based hierarchical feature
extraction scheme. To better capture the complex representation of
high-dimensional electroencephalography (EEG) data, we compute the joint
variability of EEG electrodes into a channel cross-covariance matrix. We then
extract the spatio-temporal information encoded within the matrix using a mixed
deep neural network strategy. Our model framework is composed of a
convolutional neural network (CNN), a long-short term network (LSTM), and a
deep autoencoder. We train the individual networks hierarchically, feeding
their combined outputs in a final gradient boosting classification step. Our
best models achieve an average accuracy of 77.9% across five different binary
classification tasks, providing a significant 22.5% improvement over previous
methods. As we also show visually, our work demonstrates that the speech
imagery EEG possesses significant discriminative information about the intended
articulatory movements responsible for natural speech synthesis.

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The categories of this paper are: hep-th
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The categories of this paper are: hep-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: quant-ph
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The categories of this paper are: math
20
The categories of this paper are: acc-phys
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The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
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The categories of this paper are: econ
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The categories of this paper are: astro-ph
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The categories of this paper are: atom-ph