**Phantom Limb Phenomenon**

**Core Concept**
The phantom limb phenomenon is a condition where an individual experiences sensations, such as pain, numbness, or tingling, in a limb that is no longer present. This complex phenomenon is thought to be related to the reorganization of the brain's somatosensory cortex following amputation.

**Why the Correct Answer is Right**
The correct explanation for phantom limb phenomenon involves the concept of **neuroplasticity** and the **remapping** of the brain's somatosensory cortex. After amputation, the corresponding area of the brain is no longer stimulated by sensory input from the missing limb. However, the brain's neural connections are highly adaptable, and the area may be **reassigned** to process sensory information from other parts of the body, leading to the perception of sensations in the missing limb. This process is also influenced by the **release of neurotransmitters**, such as substance P, which can contribute to the development of phantom pain.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not address the underlying neural mechanisms responsible for phantom limb phenomenon. While stress and anxiety can exacerbate phantom pain, they do not explain the phenomenon itself.
**Option B:** This option is incorrect because it oversimplifies the complex neural processes involved in phantom limb phenomenon. While the spinal cord plays a role in transmitting sensory information, it is not the primary site of reorganization responsible for phantom sensations.
**Option C:** This option is incorrect because it does not accurately describe the neural mechanisms involved in phantom limb phenomenon. While the brain's somatosensory cortex is involved in processing sensory information, the concept of "sensory overload" does not explain the reorganization of the brain's neural connections following amputation.

**Clinical Pearl / High-Yield Fact**
The phantom limb phenomenon highlights the brain's remarkable ability to reorganize itself in response to injury or amputation. This concept has important implications for the development of treatments for phantom pain, including the use of **mirror therapy** and **transcutaneous electrical nerve stimulation (TENS)**.

**Correct Answer:** C.