Here are the articles that caught our attention this week.
—Paul, Andrew & Jörn
Speech synthesis from neural decoding of spoken sentences
Anumanchipalli, G.K., Chartier, J., and Chang, E.F.
Nature 568, 493–498 (2019)
NY Times article (with accompanying video).
Single-trial neural dynamics are dominated by richly varied movements
Musall, S., Kaufman, M.T., Juavinett, A.L., Gluf, S., and Churchland, A.K.
bioRxiv, 308288 (2019)
Also see these extra videos.
Reward prediction error does not explain movement selectivity in DMS-projecting dopamine neurons
Lee, R.S., Mattar, M.G., Parker, N.F., Witten, I.B., and Daw, N.D.
Elife 8 (2019)
Also see this twitter thread.
Predictive error processing distinguishes between relevant and irrelevant errors after visuomotor learning
Maurer, L.K., Joch, M., Hegele, M., Maurer, H., and Müller, H.
J. Vis. 19, 18 (2019)
Uncertainty in contextual and kinematic cues jointly modulates motor resonance in primary motor cortex
Cretu, A.L., Ruddy, K., Germann, M., and Wenderoth, N.
J Neurophysiol 121, 1451–1464 (2019)
Lapses in perceptual judgments reflect exploration
Pisupati, S., Chartarifsky-Lynn, L., Khanal, A., and Churchland, A.K.
bioRxiv, 613828 (2019)
Exercise enhances motor skill learning by neurotransmitter switching in the adult midbrain
Li, H.-Q., and Spitzer, N.C.
bioRxiv, 613539 (2019)
A theory of multineuronal dimensionality, dynamics and measurement
Gao, P., Trautmann, E., Yu, B., Santhanam, G., Ryu, S., Shenoy, K., and Ganguli, S.
bioRxiv, 214262 (2017)
A “timely” read for the neuroscience community (it’s only a few years later). The key takehome is that we need richer tasks to capitalize on the advancements made in neural recording technology. The authors demonstrate that recording more neurons (without increasing the complexity of the task) does not mean the true dimensionality of your data increases. Importantly, this is also used to address the concern that by sampling only a portion of neurons, we might under sample the true dimensionality. Therefore, better insights can be gained with more careful consideration of the tasks we use, and not necessarily by simply increasing the number of neurons we record. Also watch the YouTube talk.
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Please keep in mind that the appearance of a paper on our reading list should not necessarily be considered an endorsement of the work unless of course we explicitly endorse it, for example in a blurb. As always, please read papers with a critical eye.