Does a thought really correspond to chemical or electrical flow?

‘Negation’ and ‘Opposite’ are clearly 2 different things. Opposites are a special case of negation. Consider any physical process, say, breaking. Its negation is ‘not breaking’. This could mean painting, caressing, kissing etc. Whereas, the opposite of breaking is joining (which is also a negation - a special case of it). Now consider mental processes - thoughts. Mental processes have a physical basis - chemicals or electrical flow. Consider the process of thinking the thought ‘Lets go for this movie’. This corresponds to a certain chemical and electrical flow. Now, the negation of thinking this is not thinking this. That is, not thinking that ‘let's go for this movie’. This could mean doing something other than thinking ‘let's go for this movie’. This would mean thinking something else or not thinking anything. This analogously corresponds to that particular electrical and chemical flow NOT happening. But now consider the opposite of thinking ‘let's go for this movie’, which is - ‘let's not go for this movie’. This doesn't analogously correspond to the reverse particular electrical/chemical flow i.e. opposite flow!