Questioning the role of sparse coding in the brain.

By Anton Spanne, Henrik Jörntell. 2015

111 citations recorded by the source corpus.

Subfields: Cellular and Molecular Neuroscience, Cognitive Neuroscience, Electrical and Electronic Engineering

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In Cellular and Molecular Neuroscience

In Cognitive Neuroscience

In Electrical and Electronic Engineering

Citations in the corpus

Re-evaluating circuit mechanisms underlying pattern separation (2019, positive): “But this concept has been challenged based on the temporally dense activity of single granule cells recorded in vivo (Chadderton et al., 2004; Jörntell and Ekerot, 2006; Spanne and Jörntell, 2015; Chen et al., 2017).”
Optimal degrees of synaptic connectivity (2017, unknown): “Some studies have suggested that granule-cell input is more homogeneous (Jörntell and Ekerot, 2006; Bengtsson and Jörntell, 2009) and that granule cells function as noise filters (Ekerot and Jörntell, 2008) or improve generalization (Spanne and Jörntell, 2015).”
Computational Principles of Supervised Learning in the Cerebellum (2018, unknown): “…hours after training (Cooke et al. 2004) and is reminiscent of findings from other brain areas, such as the hippocampus or the amygdala, where memory traces are gradually transferred to different sites in the brain for long-term storage (Dudai et al. 2015, Medina et al. 2002, Squire et al. 2015).”
Multimodal sensory integration in single cerebellar granule cells in vivo (2015, unknown): “DOI: 10.7554/eLife.12916 1 of 10 multisensory inputs (Azizi and Woodward, 1990; Huang et al., 2013).”
Sparse activity of identified dentate granule cells during spatial exploration (2016, background): “Sparse activity is a hallmark feature of cortical and hippocampal function (Treves and Rolls, 1994; Olshausen and Field, 2004; Wolfe et al., 2010; Barth and Poulet, 2012; Spanne and Jörntell, 2015).”
Cerebellar granule cells acquire a widespread predictive feedback signal during motor learning (2017, background): “Gray indicates that not enough trials (5) were available to compute a value.”
Consensus Paper: Towards a Systems-Level View of Cerebellar Function: the Interplay Between Cerebellum, Basal Ganglia, and Cortex (2016, result): “In this case, there is an unconditional transmission of information through the granule layer from individual functional pathways, which means that the information carried by these pathways can be integrated by the Purkinje cell without being dependent on concomitant input from other mossy fiber sys”