2.2 Dorsal column pathway o Carries fine touch. vibration and conscious proprioception signals o 1st neuron enters spinal cord through dorsal root ascends to medulla(brain stem) neuron crosses over in C medulla: ascends to thalamus δ处 ●3 neuron projects to 分z somatosensory cortex2.2 Dorsal column pathway ⚫ Carries fine touch, vibration and conscious proprioception signals ⚫ 1 st neuron enters spinal cord through dorsal root; ascends to medulla (brain stem) ⚫ 2 nd neuron crosses over in medulla; ascends to thalamus ⚫ 3 rd neuron projects to somatosensory cortex