Oxytocin and Human Defensive Responses in a Dynamic Situation

Escape sucess rates when confronting different predators

Escape sucess rates in successfully entering the refuge when confronting the fast, medium and slow predators.

Flight initiation distance

It is the prey-predator distance when a prey flees from a threat, a key index quantifying escape decisions.

The distance to refuge

The distance to refuge when a prey flees from a threat.

Brain activity patterns in response to threats along the predatory imminence continuum

Brain activity patterns in response to different predators along the predatory imminence continuum. We will examine these brain response patterns via both the conventional univariate analysis and the machine learning-based multivariate pattern analysis (MVPA) approaches. Based on previous studies, the medium predator is a priori used as an anchor for fast and slow predators for a more sensitive measure of brain activity differences and contrasts with the medium predator would be reported in the suplemental files for completeness (if there were significant effects).

Confidence rating scores

Participants are asked to rate their confidence levels in successfully escaping from the predator before each block.

Anxiety rating scores

Particioants are asked to rate how anxious they felt during the escape decision-making process.

SCR during task

Skin Conductance Response (SCR) data are recorded in the task during scanning.