**Core Concept**
The neocerebellum, also known as the lateral cerebellum, is a part of the cerebellum responsible for processing and coordinating information related to motor learning, cognition, and spatial navigation. It plays a crucial role in the development of motor skills and adaptation to new tasks.

**Why the Correct Answer is Right**
The neocerebellum is involved in the regulation of cognition, particularly in tasks that require attention, working memory, and executive functions. This is achieved through the connection of the neocerebellum with the prefrontal cortex, which enables the integration of motor skills with cognitive processes. The neocerebellum also contributes to the development of spatial memory and navigation by processing information from the hippocampus and other limbic structures.

**Why Each Wrong Option is Incorrect**
**Option A:** The vermis, which is part of the medial cerebellum, is primarily involved in the regulation of posture, balance, and eye movements, making it an incorrect choice.
**Option B:** The flocculonodular lobe, located in the medial cerebellum, is mainly responsible for the regulation of eye movements and balance, ruling it out as the correct answer.
**Option C:** The cerebellar nuclei, which are located in the white matter of the cerebellum, serve as the primary output centers for the cerebellum, but they are not directly involved in the functions of the neocerebellum.

**Clinical Pearl / High-Yield Fact**
The neocerebellum's involvement in cognitive processes highlights its potential role in the pathophysiology of cerebellar disorders, such as ataxia and cognitive impairment, which are often seen in conditions like multiple sclerosis and stroke.

**Correct Answer: C. Coordination of motor learning and cognition**