Neuronal correlates of parametric working memory in the prefrontal cortex

Article Abstract:

Monotonic stimulus encoding could be the basic representation of one-dimensional sensory stimulus quantities in working memory, according to research involving recording from single neurons in the prefrontal cortex (PFC) of monkeys. This research supports the view that working memory responses for tasks that do not include a spatial component are preferentially found in the ventral regions of the lateral PFC. It has been shown that neurons in the PFC can retain working memory information induced by non-visual modalities.

Cerebral cortex, Short-term memory

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Somatosensory discrimination based on cortical microstimulation

Article Abstract:

The rapidly adapting neurons in area 3b of the primary somatosensory cortex activate the circuit leading to the perception of flutter, according to research undertaken on monkeys trained to discriminate the difference in frequency between two flutter stimuli delivered sequentially on the fingertips. It also seems that the neural code underlying the sensation of flutter can be finely manipulated. However, it is hard to determine the precise effect of microstimulation.

Sensory stimulation, Higher nervous activity

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A chorus line. Neurobiology

Article Abstract:

Steinmetz and colleagues have suggested that attention causes neurons to join forces and reinforce their representation of the relevant object. The activity of neurons in secondary somentosensory cortex (SII) was recorded, and 80% of the neurons fired different numbers of spikes in two tasks. 66% of all neuron pairs were significantly synchronized during visual or tactile discrimination.

Neurobiology

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