How does the brain transform a fleeting touch on the fingertip into a deliberate decision seconds later? Neurophysiologist Ranulfo Romo explains how sensory representations are maintained, transformed, and compared across cortical areas , revealing the slow, parametric neural code that bridges perception and decision-making. Subscribe for more from the Convergent Science Network podcast series. Ranulfo Romo joins Paul Verschure and Tony Prescott at the BCBT summer school to discuss decades of work tracing how somatosensory signals travel from primary cortex to frontal decision-making areas in the primate brain. Using a vibrotactile discrimination task in which monkeys compare two temporally separated stimuli, Romo has mapped the transformation of sensory information at each stage , from faithful isometric representations in S1 arriving within 25  ...