Neuronal avalanches are a structure of organization of cascades of synchronized of activity in the cortex that have several surprising implications for how we understand…
Neuronal Avalanches: What are They and What do They Mean?
Lab Talk
Pitfalls of Filtering the EEG Signal
Filtering of the EEG signal to remove artifacts is a common pre-processing step but introduces temporal distortions in the signal. How do you chose a…
The Radically Changing View of the Cerebellum
Long thought to be purely involved in motor activity, new roles have been discovered for the cerebellum in cognition. Yet so long on a backfoot…
Finding your Grandmother Inside Your Head
How do you perceive your Grandmother? It is still not known how the activity of neurons represent complex perceptual objects with many features. The theories…
From Neuron to Brain: The Perils of a Reductionist Approach
Much of neuroscientific research on brain signals is focused on studying the spiking activity of neurons in a dish. Can this really tell us how…
Non Sinusoidal and Non Stationary Properties of Neural Signals
Electrical signals from the brain are not simply a superposition of sinusoids resulting in limitations of fourier analysis. A recently proposed cycle-by-cycle approach can shed…
Brain Waves, Sine Waves and the Fourier Transform
The most popular method of analyzing brain signals is to decompose it into its component sinusoids using the fourier transform. However a non-sinusoidal physiology poses…
The Puzzle of Working Memory
Working memory, the capacity to keep things ‘in mind’ such as a phone number, is a phenomenon poorly understood in Neuroscience. What do we know…
The Remarkable Inconsistency of EEG Frequency Band Definitions
Defining the power spectrum in terms of different ranges named delta, theta, alpha, beta and gamma forms a fundamental framework in the EEG literature today. …
Stimulation, Sensation and Localization in the Cortex
Some aspects of cortical localization are well established but it may be the atypical responses to cortical stimulation that hold the keys to the the…
