Parietal Cortex Neurons is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
The parietal cortex is a higher-order association region that integrates sensory information to support spatial awareness, attention, navigation, and sensorimotor coordination. Parietal cortex neurons are critically involved in constructing the spatial representations that underlie many cognitive functions and are progressively compromised in Alzheimer's disease (AD), posterior cortical atrophy (PCA), and other neurodegenerative conditions [1].
The parietal cortex occupies the superior posterior portion of the cerebral cortex, between the occipital and frontal lobes. It can be divided into several functionally distinct regions that work together to create coherent spatial and multisensory representations [2].
| Region | Abbreviation | Primary Functions |
|---|---|---|
| Primary somatosensory cortex | S1 (Brodmann 1,2,3) | Tactile sensation, proprioception |
| Secondary somatosensory cortex | S2 (Brodmann 43) | Object recognition, bimanual integration |
| Superior parietal lobule | SPL (Brodmann 5,7) | Spatial attention, reaching |
| Inferior parietal lobule | IPL (Brodmann 39,40) | Language, number processing, praxis |
| Posterior parietal cortex | PPC (Brodmann 5,7,39,40) | Visuomotor integration |
| Taxonomy | ID | Name / Label |
|---|---|---|
| Cell Ontology (CL) | CL:0000162 | parietal cell |
| Database | ID | Name | Confidence |
|---|---|---|---|
| Cell Ontology | CL:0000162 | parietal cell | Exact |
Pyramidal neurons constitute the majority of parietal cortical neurons [3]:
Corticospinal Pyramidal Neurons:
Intratelencephalic (IT) Pyramidal Neurons:
Corticothalamic Pyramidal Neurons:
Local inhibition shapes parietal processing [4]:
Parietal neurons exhibit diverse receptive field properties [5]:
Somatosensory Cortex (S1):
Posterior Parietal Cortex (PPC):
PPC neurons transform sensory input into motor output [6]:
Parietal neurons modulate activity based on attention [7]:
The parietal cortex creates spatial representations [8]:
The parietal cortex is a core node of the attention network [9]:
The intraparietal sulcus (IPS) is critical for numerical cognition [10]:
Parietal cortex supports spatial navigation [11]:
Parietal dysfunction is a hallmark of AD [12]:
PCA predominantly affects parietal-occipital regions [13]:
Parietal involvement in PD [14]:
The study of Parietal Cortex Neurons has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
Culham JC, Valyear KF. Human parietal cortex in action. 2006. ↩︎
Goodale MA, Milner AD. [Separate visual pathways for perception and action](https://doi.org/10.1016/0166-2236(92). 1992. ↩︎
Saleem KS, et al. Integration of visual and motion information in the primate parietal cortex. 2020. ↩︎
Rudy B, et al. Three groups of interneurons mediate inhibition. 2011. ↩︎
Gardner EP. Somensory cortical representation of the body. 2009. ↩︎
Cohen YE, Andersen RA. A reference frame for the synthesis of visual and proprioceptive signals. 2002. ↩︎
Bisley JW. The neural basis of visual attention. 2011. ↩︎
Colby CL, Goldberg ME. Space and attention in parietal cortex. 1999. ↩︎
Corbetta M, Shulman GL. Control of goal-directed and stimulus-driven attention in the brain. 2002. ↩︎
Dehaene S. [The neural basis of the Weber-Fechner law](https://doi.org/10.1016/S1364-6613(03). 2003. ↩︎
Byrne P, et al. parietal cortex and spatial cognition. 2007. ↩︎
McGovern DP, et al. The relevance of parietal lobe involvement in Alzheimer's disease. 2020. ↩︎
Crutch SJ, et al. [Posterior cortical atrophy](https://doi.org/10.1016/S1474-4422(11). 2012. ↩︎
Poletti M, et al. The parietal lobe in Parkinson's disease. 2018. ↩︎