Can Male Mice Develop Preference Towards Gentle Stroking by an Experimenter?

Area of Science:

• Neuroscience
• Behavioral Science
• Socio-emotional processing

Background:

• Affective touch, like gentle stroking, is crucial for inter-individual communication and has hedonic value.
• C-tactile (CT) fibers are thought to transmit these positive touch sensations in humans, with analogous systems proposed in rodents.

Purpose of the Study:

• To develop a novel tactile conditioned place preference paradigm in mice to assess the rewarding properties of gentle stroking.
• To investigate the link between tactile preference and innate sociability in mice.
• To explore the potential for gentle stroking to foster affiliative relationships between mice and humans.

Main Methods:

• A novel tactile conditioned place preference paradigm was employed using mice.
• Mice were subjected to the classic three-chambered social approach test.
• Experimenter's gentle stroking was used as the tactile stimulus.

Main Results:

• Mice demonstrated that gentle stroking by an experimenter is a rewarding experience.
• Mice showed a significant preference for the experimenter's hand during the social approach test.
• These findings indicate that tactile stimuli can influence reward and preference behaviors.

Conclusions:

• Gentle stroking by an experimenter plays a significant role in reward and preference in mice.
• This tactile interaction can establish an affiliative relationship between mice and humans.
• The developed model offers a platform for future research into specific fiber involvement and reward system activation.