Topic: Ticklishness

Understanding internal states is a prominent challenge in neuroscience, particularly when it comes to defining and expressing emotions across different species. The brain mechanisms responsible for driving evolutionarily conserved behaviors tied to internal states remain elusive. Ticklishness, a unique sensation observed in social species ranging from rodents to humans, is characterized by the emission of appetitive 50 kHz ultrasonic vocalizations in response to tickling. Previous research (Ishiyama & Brecht, 2016) identified the activation of the trunk somatosensory cortex (S1) during tic