User profiles for G. H. Denfield

George Denfield

Columbia University
Verified email at columbia.edu
Cited by 2566

Taking subjectivity seriously: towards a unification of phenomenology, psychiatry, and neuroscience

EJ Kyzar, GH Denfield - Molecular psychiatry, 2023 - nature.com
Nearly all psychiatric diseases involve alterations in subjective, lived experience. The
scientific study of the biological basis of mental illness has generally focused on objective …

Spike sorting for large, dense electrode arrays

…, A Grosmark, M Belluscio, GH Denfield… - Nature …, 2016 - nature.com
Developments in microfabrication technology have enabled the production of neural electrode
arrays with hundreds of closely spaced recording sites, and electrodes with thousands of …

[PDF][PDF] Pupil fluctuations track fast switching of cortical states during quiet wakefulness

…, E Froudarakis, CR Cadwell, D Yatsenko, GH Denfield… - neuron, 2014 - cell.com
Neural responses are modulated by brain state, which varies with arousal, attention, and
behavior. In mice, running and whisking desynchronize the cortex and enhance sensory …

[PDF][PDF] State dependence of noise correlations in macaque primary visual cortex

…, P Berens, RJ Cotton, M Subramaniyan, GH Denfield… - Neuron, 2014 - cell.com
Shared, trial-to-trial variability in neuronal populations has a strong impact on the accuracy
of information processing in the brain. Estimates of the level of such noise correlations are …

[HTML][HTML] Deep convolutional models improve predictions of macaque V1 responses to natural images

SA Cadena, GH Denfield, EY Walker… - PLoS computational …, 2019 - journals.plos.org
Despite great efforts over several decades, our best models of primary visual cortex (V1) still
predict spiking activity quite poorly when probed with natural stimuli, highlighting our limited …

On the structure of neuronal population activity under fluctuations in attentional state

AS Ecker, GH Denfield, M Bethge… - Journal of …, 2016 - Soc Neuroscience
Attention is commonly thought to improve behavioral performance by increasing response
gain and suppressing shared variability in neuronal populations. However, both the focus and …

[HTML][HTML] Attentional fluctuations induce shared variability in macaque primary visual cortex

GH Denfield, AS Ecker, TJ Shinn, M Bethge… - Nature …, 2018 - nature.com
Variability in neuronal responses to identical stimuli is frequently correlated across a population.
Attention is thought to reduce these correlations by suppressing noisy inputs shared by …

Monetary favors and their influence on neural responses and revealed preference

AH Harvey, U Kirk, GH Denfield… - Journal of …, 2010 - Soc Neuroscience
Favors from a sender to a receiver are known to bias decisions made by the recipient,
especially when the decision relates to the sender, a feature of social exchange known as …

[HTML][HTML] Learning divisive normalization in primary visual cortex

MF Burg, SA Cadena, GH Denfield… - PLoS computational …, 2021 - journals.plos.org
Divisive normalization (DN) is a prominent computational building block in the brain that
has been proposed as a canonical cortical operation. Numerous experimental studies have …

Response to Comment on “Principles of connectivity among morphologically defined cell types in adult neocortex”

…, P Berens, AS Ecker, S Patel, GH Denfield… - Science, 2016 - science.org
The critique of Barth et al. centers on three points: (i) the completeness of our study is
overstated; (ii) the connectivity matrix we describe is biased by technical limitations of our brain-…