The grounding of temporal metaphors

Area of Science:

• Cognitive Neuroscience
• Linguistics
• Psychology

Background:

• Grounded cognition theory posits that conceptual knowledge processing involves sensory-motor brain regions.
• The relationship between temporal language and the brain areas responsible for time perception remains underexplored.
• Investigating whether temporal language recruits neural systems associated with direct time perception is crucial.

Purpose of the Study:

• To determine if language describing temporal extent activates brain regions involved in time perception.
• To compare neural responses to temporal metaphors with those elicited by fictive and literal motion.
• To explore the grounding of temporal language in sensory-motor experiences.

Main Methods:

• Participants read sentences describing temporal extent using motion verbs and their static controls.
• Comparison conditions included fictive motion and literal motion sentences with their respective static controls.
• Brain activity was analyzed, focusing on time-sensitive regions identified via meta-analysis.

Main Results:

• Temporal metaphors specifically activated time-sensitive brain regions, including the left insula, right claustrum, and bilateral posterior superior temporal sulci.
• Fictive and literal motion contrasts did not yield similar specific activations.
• Fictive motion activated a conceptual motion-sensitive area in the left posterior inferior temporal sulcus (ITS).

Conclusions:

• Language related to time is, at least partially, grounded in the experience of time.
• Motion semantics differentially affect event and object representations in the brain.
• Temporal events described with motion verbs appear to be processed as animate, while static entities become conceptualized as motional.