Unpleasant mood is linked to local processing in haptics

Area of Science:

• Cognitive Psychology
• Neuroscience
• Haptic Perception

Background:

• Mood states are known to influence visual processing, with positive moods favoring global processing and negative moods favoring local processing.
• However, the impact of mood on haptic (touch-based) spatial processing remains largely unexplored.

Purpose of the Study:

• To investigate whether induced happy and sad moods affect the level of spatial information processing in haptics.
• To determine if mood influences haptic shape matching preferences.

Main Methods:

• Participants were induced into happy, sad, or neutral mood states using classical music.
• Blindfolded participants explored 2D embossed shapes with their fingers.
• They compared a probe stimulus to two comparison stimuli, identifying the one that matched either locally or globally.

Main Results:

• Participants in the sad mood group selected the locally matching comparison more frequently than those in the happy and neutral groups.
• A general preference for global shape matches was observed across all groups, suggesting global information is often more salient in touch.
• This indicates that negative moods can shift haptic spatial preferences towards local features.

Conclusions:

• Mood states, particularly negative ones, can significantly influence haptic spatial perception and shape matching.
• The findings suggest that unpleasant moods may enhance the salience of local features in tactile exploration.
• Despite mood effects, global-level information appears to be relatively more prominent in haptic shape processing under the tested conditions.