I believe they're sense data illusions, rather than psychic illusions.
Epistimologically, they exist as sense perceptions, and create all of the sense information that normal things do. By creating very realistic tactile sensations, they overload one's cognitive matrix, thereby enabling them to affect any sentient being. (note that that is sentient, not sapient. A self aware computer is sapient but not sentient, while a very realistic android is sentient but not sapient.)
Scientifically, they consist of light, heat, and sonic vibrations tuned to cunning frequencies, stimulating anyone that can perceive. Therefore, a bond to the planet soul would only discipline one to survive the pain caused by the illusions more easily, while being an android might enable one to disable their senses to escape the illusions.
Fundamentally, beware my handwave of DOOOOOOOM!!