**Core Concept**
Dissociated sensory loss refers to the selective impairment of specific sensory modalities, such as pain, temperature, touch, proprioception, or vibration, due to lesions affecting specific pathways in the central nervous system. This phenomenon is a result of the distinct projections of sensory afferents in the spinal cord and brainstem.

**Why the Correct Answer is Right**
Dissociated sensory loss is typically observed in conditions affecting the lateral spinothalamic tract, which conveys pain and temperature sensation, while sparing the posterior columns, which transmit proprioception and vibration. The spinothalamic tract is a crossed pathway, meaning that the sensory information from the opposite side of the body is transmitted to the contralateral hemisphere of the brain.

**Why Each Wrong Option is Incorrect**

* **Option A:** This option is incorrect because dissociated sensory loss is not typically associated with peripheral nerve lesions, which would more likely cause a mixed pattern of sensory deficits.
* **Option B:** This option is incorrect because cerebellar lesions primarily affect coordination and balance, rather than causing dissociated sensory loss.
* **Option C:** This option is incorrect because peripheral neuropathy can cause a variety of sensory deficits, but it is not typically characterized by dissociated sensory loss.

**Clinical Pearl / High-Yield Fact**
A classic example of dissociated sensory loss is seen in the Brown-Séquard syndrome, where a hemisection of the spinal cord results in ipsilateral loss of proprioception and vibration, and contralateral loss of pain and temperature sensation.

**Correct Answer: D**