The piriform cortex (PCx) receives direct input from the olfactory bulb (OB) and is the brain's
main station for odor recognition and memory. The transformation of the odor code from OB …

The piriform cortex (PCx) is essential for learning of odor information. The current view
postulates that odor learning in the PCx is mainly due to plasticity in intracortical (IC) …

Neurons in the neocortex exhibit spontaneous spiking activity in the absence of external
stimuli, but the origin and functions of this activity remain uncertain. Here, we show that …

Odor coding in mammals is widely believed to involve synchronized gamma frequency (30–
70 Hz) oscillations in the first processing structure, the olfactory bulb. How such inputs are …

Odors activate distributed ensembles of neurons within the piriform cortex, forming cortical
representations of odor thought to be essential to olfactory learning and behaviors. This odor …

Odor representations are initially formed in the olfactory bulb, which contains a topographic
glomerular map of odor molecular features. The bulb transmits sensory information directly …

In primary sensory cortices, there are two main sources of excitation: afferent sensory input
relayed from the periphery and recurrent intracortical input. Untangling the functional roles of …

Spatial and temporal activity patterns of olfactory bulb projection neurons underlie the initial
representations of odors in the brain. However, olfactory perception ultimately requires the …

In the piriform cortex, individual odorants activate a unique ensemble of neurons that are
distributed without discernable spatial order. Piriform neurons receive convergent excitatory …

Current models of odor discrimination in mammals involve molecular feature detection by a
large family of diverse olfactory receptors, refinement of molecular feature extraction through …