The ventral posterolateral nucleus (VPL) is one of the subdivisions of the ventral posterior nucleus in the ventral nuclear group of the thalamus. [1] It relays sensory information from the second-order neurons of the neospinothalamic tract and medial lemniscus (of the dorsal column-medial lemniscus pathway ) which synapse with the third-order ...

The Ventral Posterolateral Nucleus (VPL) is defined as a nucleus characterized by large stellate or polygonal cells, with subdivisions based on cell size, density, and response to stimuli. It can be distinguished from other nuclei by the presence of both large and small-sized neurons and differences in AChE-reaction intensity.

2023年7月24日 · The ventral posterolateral nucleus gets fed by the spinothalamic tracts and dorsal columns of the spinal cord. As a result, this nucleus handles sensations of temperature and pain, along with vibration, pressure, fine touch, and proprioception.

The ventral posterior nucleus is divided into: Ventral posterolateral nucleus, which receives sensory information from the body via the medial lemniscus, and spinothalamic tracts. Ventral posteromedial nucleus, which receives sensory information from the head and face via the trigeminal nerve.

The ventrobasal complex (VB) is a relay nucleus of the thalamus for nociceptive stimuli received from nociceptive nerves. The VB consists of the ventral posteromedial nucleus (VPM) and the ventral posterolateral nucleus (VPL). In some species, the ventral posterolateral nucleus, pars caudalis is also a part of the VB. [1] .

2023年12月14日 · Somatosensory information is propagated from the periphery to the cerebral cortex by two parallel pathways through the ventral posterolateral (VPL) and ventral posteromedial (VPM) thalamus. VPL and VPM neurons receive somatosensory signals from the body and head, respectively.

The ventral posterolateral (VPL) thalamic nucleus is one of the termination sites for the spinothalamic tract. VPL neurons respond to innocuous and noxious mechanical stimuli and some of the neurons respond to visceral nociception e.g. intraperitoneal injection of bradykinin and uterine distension .

The VPL nucleus is concerned with somatosensory input from the body, whereas the VPM nucleus receives information concerning the head. In primates, the VPL nucleus receives synaptic input from both the dorsal column-medial lemniscus pathway, spino-cervicothalamic pathway and the spinothalamic tract.

The ventral posterior complex is the main relay for sensory inputs to reach the cerebral cortex and it can be divided into at least three main parts: the ventral posterolateral nucleus (VPL) receiving spinal somatosensory inputs, the ventral posteromedial nucleus (VPM), receiving trigeminal somatosensory inputs, and the parvicellular medial ...

find decreased activation of the ventral posterolateral nucleus (VPL) during transient peaks in the global signal in low arousal and awareness states (non-rapid eye movement sleep and anesthesia) compared to wakefulness and in eyes-closed compared to eyes-open conditions in healthy awake individuals. Intrigu-