Keeping with the Gandhara style, the body and legs are depicted as strong and sturdy. The muscular body is considered to be inflated with "prana" (life-breath), an Indian concept. The bow arched eyebrows and lotus shaped eyes are also characteristic of the Indian school of sculpture. The presence of the earth goddess at the feet also reflects Central Asian influence. The "ayudhapurusha"s in the icon may be inspired by those in the Vishnu iconography of Gupta art. They and the earth goddess are also part of traditional Vishnu iconography, even when he is depicted as one-headed. The central Vishnu head and side heads of Varaha and Narasimha may be influenced by other configurations in architecture. For example, Vishnu, Varaha and Narasimha may be depicted on back (western) and side (northern/southern) walls of temples. Varaha (rescues the earth from the cosmic waters at the beginning of an eon), Vishnu (as a human) and Narasimha (destroying a demon) may represent creation, preservation and destruction – the three functions in the Hindu universe. Vaikuntha Chaturmurti represents Vishnu as the Supreme Being, Creator of the Universe. Also, Varaha and Narasimha are oldest in antiquity (avatars Matsya and Kurma which are described in sacred texts to be appearing before Varaha and Narasimha were associated with Vishnu at a later date). Their presence in the iconography of Vaikuntha Chaturmurti suggests that this form originated in the Gupta era, where their cults were at their peak. Many writers associate the boar and lion heads to the avatars Varaha and Narasimha, others associate with the "Chaturvyuha"s, however the latter is heavily disputed. The "Vishnudharmottara Purana" describes the "Chaturvyuha"s – Vāsudeva (Krishna), Samkarshana (Balarama), Pradyumna, Aniruddha – four manifestations of Vishnu. Though the text does not explicitly equate the two forms. Many modern indologists as well as Pancharatra followers associate both of them based on the association of Chaturvyuhas with gunas (qualities) in the "Vishnudharmottara Purana" and the Pancharatra texts. The gunas are in turn associated with Vaikuntha Chaturmurti.