Map-like organisations of relational knowledge can be extracted from the hippocampal-entorhinal system in situations where relationships are non-spatial rather than spatial, discrete rather than continuous, and unavailable to conscious awareness.
Remaining focused on the topic at hand when speaking depends on effective selection of task-relevant semantic knowledge, and declines in this ability account for increases in off-topic speech in older people.
By thinking about experimental techniques in terms of six broad approaches – perturbation, visualization, substitution, characterization, reconstitution, and simulation – researchers may be able to generate more reliable inferences.
Neuron ensembles in the medial prefrontal cortex gradually develop codes for relevant, latent variables common across multiple experiences while – apparently independently – losing information about irrelevant, contextual variables unique to each experience.
While the striatum and orbitofrontal cortex learn about threats through verbal warnings, the amygdala learns only from direct experience, suggesting that the amygdala forms part of a specialized threat detection system.
Hippocampome.org is an online resource that provides free human- and machine-readable access to the comprehensive property-based classification of hippocampal neurons from 14,000 pieces of published experimental evidence.