It received mixed reviews, with multiple critics noting it was considerably worse in quality than the previous week's episode while at the same time praising the case's ties to Peter's past as well as the return of Sam Weiss.

Broyles (Lance Reddick) and Nina (Blair Brown) reveal new information leading to the sleep researcher Dr. Nayak (Ravi Kapoor) who implanted the chips.

Back in Boston Walter believes the chips lead to mind control and tests this on the FBI agent assigned to him while Peter and Olivia are away.

Sam Weiss (Kevin Corrigan) helps her work through it by giving her a "project" that requires her to collect business cards from people wearing the color red.

Shooting partly took place in the basement of a semi-functioning mental hospital in Vancouver, leading actress Anna Torv to remark during filming, "I heard this is where they kept dead bodies.

[2] In the final scene set in the young Peter's bedroom in the parallel universe, a poster depicts the Space Shuttle Challenger in its 11th mission (1984).

[11] He concluded his review by noting the best part of "Dream Logic" was the ending depicting a young Peter, "It's a haunting scene, and it adds yet another stone in this long pathway to revelation that the Fringe team is building up to...

"[12] Newsarama's Chanel Reeder stated "Dream Logic" "certainly put the brakes on the speed that Fringe had gained in the previous" episode, but praised the connection with Peter's past as "one of the most interesting underlying parts".

[13] Josie Kafka of Open Salon was more positive than other reviewers, and in particular highlighted the episode's humor, "Almost all of the Cambridge scenes were funny: Astrid and Walter have a great rapport, especially when there's a rube in the room for them to play with.

They concluded that the Brain–computer interface (BCI) chips, like the ones used in the episode to tie the victims' brains to the computer used by Dr. Laxmeesh Nayak, have also been used on real-life human subjects, though not in relation to controlling sleep cycles.

[15] In addition, Popular Mechanics noted that Walter's theory of the victims' deaths being caused by exhaustion is "pure bunk", as there are many long-term experiments that have safely tested humans' deprivation of REM sleep.

[15] According to one scientist interviewed, though chips shown in "Dream Logic" cause hallucinations, paranoid thoughts, and a disconnect from reality, these traits are "not even remotely possible" outside of fiction.

[15] Director Paul A. Edwards submitted "Dream Logic" for consideration in the Outstanding Directing for a Drama Series category at the 62nd Primetime Emmy Awards.