Rey et al recorded local field potentials and neuron spikes from the human medial temporal lobe during a recognition task. Single-neuron responses were preceded by a global increase in theta oscillations and a local and stimulus-specific increase in gamma oscillations. The LFPs responses were correlated with conscious recognition and neuron spiking was time-locked to the LFPs. They suggest that theta reflects a global recognition signal whereas phase-locked of neurons to gamma reflects activation of local circuits that represent the recognized stimulus.
About the Author
The Miller Lab uses experimental and theoretical approaches to study the neural basis of the high-level cognitive functions that underlie complex goal-directed behavior. ekmillerlab.mit.edu