Do the dead actually have the senses we have when alive?

“Verily, they are greatly tortured in their graves and the animals hear it” [Musnad Ahmed]. What's the punishment and wouldn't all of us be punished? Bodies being slowly eaten and rotting? Also isn't this a contradiction to the hadith?: "You cannot make the dead hear, you cannot make the deaf listen to your call when they turn their backs and leave." (Qur'an 27:80) "The living and the dead are not the same. Allah makes anyone He wills hear, you cannot make those in their graves hear." (Qur'an 35:22) "And do not say about those who are killed in the way of Allah, "They are dead." Rather, they are alive, but you perceive [it] not." Shaykh al-Islam Ibn Taymiyah (may Allaah have mercy on him) said: “The view of the salaf (earliest generations) of this ummah and its imams is that the torment or blessing (of the grave) happens to the soul of the deceased and his body. After it departs from the body, the soul continues to be blessed or punished, and it is also connected to the body from time to time, so that the blessing or torment befalls the body as well as the soul.” Al-Nawawi said: “If it is said, we see the deceased and how he is in his grave, so how can he be questioned, made to sit up and beaten with iron rods, when no mark is left on him? The answer is that this is not impossible, and indeed there is a similar case in our regular lives, that of the sleeper who feels joy or pain of which we feel nothing. A person who is awake may also feel joy or pain because of something he hears or thinks about, and those who are sitting with him feel nothing of that. Similarly, Jibreel used to come to the Prophet (peace and blessings of Allaah be upon him) and tell him of the Wahy (Revelation), and the people present were unaware of it. All of that is clear and evident.” **That explanation makes no sense, because there is no more brain material left.** I see a good way to prevent the punishment in the grave. Behead the person, cremate the head and now since there isn't single brain cell left we all good! Am I correct or incorrect in saying this?