Short Answer 
The analysis of skin pressure sensation begins with identifying mechanoreceptors, particularly the corpuscles of Pacini, which are sensitive to pressure. Subsequently, a table is constructed to demonstrate how action potential frequency varies with different pressure levels, and finally, identifying the threshold intensity needed to activate the pressure sensor is crucial for understanding receptor sensitivity.
Step 1: Identifying the Receptor
To understand the sensation of pressure in the skin, we need to identify the specific type of receptor involved. The skin contains specialized receptors known as mecanoreceptors, which respond to touch and changes in pressure. Among these, the corpuscles of Pacini are particularly noted for their sensitivity to pressure. By recognizing this receptor type, we establish a foundation for further analysis.
Step 2: Analyzing Frequency Variation
Next, we construct a table to illustrate how the frequency of action potentials (PA) changes with varying levels of pressure. This involves conducting experiments where different pressures are applied to the corpuscle and the resulting number of action potentials is recorded. The table should reflect this relationship, making it easier to visualize how pressure influences sensory nerve signaling.
Step 3: Determining Threshold Intensity
Lastly, it is essential to specify the threshold intensity required to activate the pressure sensor. This involves identifying the minimum amount of pressure needed to generate a measurable response in the receptor. This threshold is crucial for understanding the sensitivity of the receptor and how it encodes pressure into a nerve signal, completing our analysis.