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{1451}
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ref: -2018 tags: sparse representation auditory cortex excitatation inhibition balance date: 03-11-2019 20:47 gmt revision:1 [0] [head]

PMID-30307493 Sparse Representation in Awake Auditory Cortex: Cell-type Dependence, Synaptic Mechanisms, Developmental Emergence, and Modulation.

  • Sparse representation arises during development in an experience-dependent manner, accompanied by differential changes of excitatory input strength and a transition from unimodal to bimodal distribution of E/I ratios.

{1433}
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ref: -2008 tags: representational similarity analysis fMRI date: 02-15-2019 02:27 gmt revision:1 [0] [head]

PMID-19104670 Representational Similarity Analysis – Connecting the Branches of Systems Neuroscience

  • Nikolaus Kriegeskorte, Marieke Mur, and Peter Bandettini
  • Alright, there seems to be no math in the article (?), but it seems well cited so best be on the radar.
  • RDM = representational dissimilarity matrices
    • Just a symmetric matrix of dissimilarity, e.g. correlation, euclidean distance, absolute activation distance ( L 1L_1 ?)
  • RSA = representational similarity analysis
    • Comparison of the upper triangle of two RDMs, using the same metrics.
    • Or, alternately, second-order isomorphism.
  • So.. high level: