Parkinsonism reversed from treatment of pineal non-germinomatous germ cell tumor.

Background: Parkinsonism is a rare complication of non-germinomatous germ cell tumors (NGGCTs) arising from the pineal region.

Case Description: We describe a 23-year-old man who presented with Parinaud syndrome, fatigue, and hypersomnia that were caused by a pineal region NGGCT with yolk sac component and an initial α-fetoprotein (AFP) of 1011.0 ng/ml.

The role of piriform associative connections in odor categorization.

Distributed neural activity patterns are widely proposed to underlie object identification and categorization in the brain. In the olfactory domain, pattern-based representations of odor objects are encoded in piriform cortex. This region receives both afferent and associative inputs, though their relative contributions to odor perception are poorly understood.

De Novo Emergence of Odor Category Representations in the Human Brain.

Unlabelled: Categorization allows organisms to efficiently extract relevant information from a diverse environment. Because of the multidimensional nature of odor space, this ability is particularly important for the olfactory system. However, categorization relies on experience, and the processes by which the human brain forms categorical representations about new odor percepts are currently unclear.

Part-set cuing facilitation for spatial information.

Part-set cuing inhibition refers to the counterintuitive finding that hints--specifically, part of the set of to-be-remembered information--often impair memory performance in free recall tasks. Although inhibition is the most commonly reported result, part-set cuing facilitation has been shown with serial order tasks. The present study examined the influence of part-set cuing for spatial locations using novel methods and materials.