scispace - formally typeset
Search or ask a question

Do some people have more neurons than others? 

Central nervous system
Brainstem
Cortex (anatomy)
Neuron
Cerebral cortex

Answers from top 11 papers

More filters
Papers (11)Insight
Journal Article•DOI
Neuronal responsiveness to various sensory stimuli, and associative learning in the rat amygdala
Teruko Uwano, Hisao Nishijo, Taketoshi Ono, Ryoi Tamura 
01 Sep 1995-Neuroscience
172 Citations
The results indicate that some amygdalar neurons receive exclusive single sensory information, and the others receive information from two or more sensory inputs.
Open access•Journal Article•DOI
Dynamic networks in the emotional brain
Luiz Pessoa, Brenton W. McMenamin 
01 Aug 2017-The Neuroscientist
45 Citations
Thus, at a specific moment, brain regions participate more strongly in some networks than others.
Journal Article•DOI
Characterization of the neurons in the region of solitary tract nucleus during sleep
Kunihiro Eguchi, Toyohiko Satoh 
01 Jan 1980-Physiology & Behavior
31 Citations
The NTS neurons may be more related to SS mechanism than non-NTS neurons.
Journal Article•DOI
Quantitative analysis of the dendritic morphology of corticocortical projection neurons in the macaque monkey association cortex.
Huiling Duan, Susan L. Wearne, John H. Morrison, Patrick R. Hof 
01 Oct 2002-Neuroscience
77 Citations
Our results demonstrate that long corticocortical projection neurons connecting the temporal and prefrontal cortex have longer, more complex dendritic arbors and more spines than pyramidal neurons projecting locally within area 46.
Journal Article•DOI
Neuronal activities related to higher brain functions-theoretical and experimental implications
Eilon Vaadia, Hagai Bergman, Moshe Abeles 
01 Jan 1989-IEEE Transactions on Biomedical Engineering
44 Citations
Adjacent neurons need not function in unison; while some neurons are activated, others may stay inactive.
Journal Article•DOI
Linear filtering and nonlinear interactions in direction-selective visual cortex neurons: a noise correlation analysis.
Curtis L. Baker
01 May 2001-Visual Neuroscience
These comparisons showed that some neurons' data agreed reasonably well with such a model, while others agreed poorly or not at all.
Journal Article•DOI
Human brainstem catecholamine neuronal anatomy as indicated by immunocytochemistry with antibodies to tyrosine hydroxylase
John Pearson, Menek Goldstein, K. Markey, L. Brandeis 
01 Jan 1983-Neuroscience
214 Citations
There are more catecholaminergic neurons within and closely related to the superior cerebellar peduncles than have been described in other species.
Journal Article•DOI
Operant conditioning of tonic firing patterns from precentral neurons in monkey neocortex
Allen R. Wyler, Carin A. Finch 
05 May 1978-Brain Research
26 Citations
(4) Pyramidal tract neurons, as a group, appear more accurately controlled than non-pyramidal tract neurons.
Open access•Journal Article•DOI
Neural Coding for Shape and Texture in Macaque Area V4.
Taekjun Kim, Wyeth Bair, Anitha Pasupathy 
12 Jun 2019-The Journal of Neuroscience
51 Citations
Our results provide the first evidence that some cortical neurons specialize in processing shape whereas others specialize in processing textures.
Journal Article•DOI
Continued Growth of the Central Nervous System without Mandatory Addition of Neurons in the Nile Crocodile (Crocodylus niloticus).
Ayanda Ngwenya, Nina Patzke, Paul R. Manger, Suzana Herculano-Houzel 
26 Feb 2016-Brain Behavior and Evolution
38 Citations
Larger bodies thus do not imperatively require more neurons to operate them.
Journal Article•DOI
Study of the topographical distribution of different populations of motoneurons within rat's nucleus ambiguus, by means of four different fluorochromes.
Pedro Nunez-Abades, Rosario Pásaro, A.L. Bianchi 
20 Jan 1992-Neuroscience Letters
36 Citations
Some neurons may have been preganglionic parasympathetic neurons.

Related Questions

Do taller people have more neurons?6 answers
How many brain neurons does a human have?4 answers
How many neurons do humans have in brain?4 answers
How many neurons does a human?4 answers
How many neurons does a normal person have?8 answers
When do humans have the most neurons?7 answers

See what other people are reading

Whant is the function of aquaporins?
5 answers
Aquaporins (AQPs) primarily facilitate water transport across cell membranes. However, their functions extend beyond water transport. AQPs are involved in transporting various small molecules like glycerol, urea, gases (CO2, NO, etc.), ions, and even silicon and arsenite. Additionally, AQPs play roles in unexpected functions such as tumor angiogenesis regulation, cell migration promotion, skin hydration regulation, neural signal transduction, cell proliferation, inflammation modulation, and organelle physiology. In the central nervous system, AQPs mediate water flux and are crucial in brain disorders like cerebral edema and neurodegenerative disorders. In the lungs, AQPs (AQP1, AQP2, AQP4, AQP5) are essential for fluid balance in respiratory processes. Overall, AQPs are vital in various physiological processes beyond simple water transport.What are the most commonly used immortalized cell lines in neurology research?
5 answers
Immortalized cell lines play a crucial role in neurology research. In this field, commonly used immortalized cell lines include those derived from dorsal root ganglia (DRG) for studying chronic pain mechanisms, neural stem cells (NSC) for neural repair investigations, and immortalized muscle cell lines for studying neuromuscular diseases like myotonic dystrophy. Techniques like trans-immortalization have also been employed to create immortalized neurons for neurobiological studies, offering a way to derive specific cell lines with unique characteristics. Additionally, the development of immortalized human neural stem cell lines using recombinant lentiviral vectors has provided stable and effective tools for neurology research, enabling the study of neural stem cell biology and differentiation capabilities.What are staining techniques for brain tissues?
5 answers
Staining techniques for brain tissues include immunohistochemistry and Golgi staining. Immunohistochemistry allows visualization of specific tissue structures and protein expression, while Golgi staining, developed over 125 years ago, enables observation of whole nerve cells and their processes in CNS tissues. Immunohistochemistry involves mounting sections on glass slides or using the free-floating method, which is preferred for 3D reconstruction of brain regions due to better antibody penetration. On the other hand, Golgi staining involves impregnating CNS tissues with Golgi solution, embedding them in plastic, and cutting thick sections for detailed visualization of dendritic structures and synaptic spines. These techniques play crucial roles in studying brain functions, protein localization, and neuronal morphology.How does ivermectin stimulate nerve regeneration?
5 answers
Ivermectin stimulates nerve regeneration through various mechanisms. Studies have shown that ivermectin promotes peripheral nerve repair by inducing fibroblasts to adopt a glia-like phenotype, leading to enhanced proliferation and migration of neural stem cells. Additionally, isoquercitrin, a compound with anti-oxidative properties, has been found to promote nerve regeneration and remyelination, increase the expression of nerve regeneration markers, and inhibit oxidative stress, ultimately aiding in motor functional recovery after peripheral nerve injury. Furthermore, experiments with planaria species revealed that exposure to ivermectin during regeneration resulted in patterning abnormalities and delayed regeneration, highlighting the impact of ion channel drugs like ivermectin on regenerative processes. These findings collectively demonstrate the multifaceted role of ivermectin in stimulating nerve regeneration through various cellular and molecular pathways.How does alcohol cause dopamine in the brain?
5 answers
Alcohol influences dopamine release in the brain through complex mechanisms involving various brain regions. Ethanol (EtOH) affects dopamine release from the ventral tegmental and nucleus accumbens areas, leading to dysregulation in firing activity. Chronic alcohol intoxication alters dopamine turnover and activity levels in different brain regions, such as the hypothalamus and cerebral cortex. Dopamine plays a crucial role in alcohol-induced reward and the development of alcohol dependence, with alcohol activating the mesolimbic dopamine system, resulting in euphoric sensations. The intricate interplay between alcohol and dopamine involves changes in dopamine receptor levels, neurotransmitter turnover, and the modulation of dopamine transmission, highlighting potential targets for understanding and treating alcohol dependence.Citation for this?
5 answers
The citation for the question can be found in the abstract by Alfonso Iorio et al, which discusses the lack of randomized controlled trial (RCT)-based evidence in the field of haemophilia treatment, particularly regarding prophylactic clotting factor concentrates. The authors highlight the limited number of trials and patients studied, emphasizing the need for well-designed RCTs to assess the effectiveness of prophylactic clotting factor concentrates in hemophilia patients. This paper prompts a debate on the necessity and ethics of conducting RCTs in the haemophilia field, drawing parallels to a popular BMJ paper on the lack of evidence for parachutes when jumping from airplanes.What are the current techniques used in in vivo electrophysiology to study the hippocampus?
5 answers
Current techniques in in vivo electrophysiology for hippocampal studies include the use of penetrating polymer probe arrays, glass pipettes with integrated microelectrodes for multimodal data acquisition, and implantable microelectrode arrays (MEA) for dual-mode detection of neurotransmitter release and electrophysiological signals. These techniques enable researchers to record neural activity, including spikes and field potentials, from deep brain structures like the hippocampus. The integration of multiple physiological modalities in microdevices allows for comprehensive data collection, validation of spike-sorting algorithms, and advancements in brain-machine interfaces. Additionally, MEAs with selective electrochemical detection of neurotransmitters provide real-time monitoring of glutamate levels in the hippocampus, crucial for understanding neurological and mental disorders.In mouse what characterizes layer 5 pyramidal prefrontal cortex neurons?
5 answers
Layer 5 pyramidal neurons in the mouse prefrontal cortex exhibit distinct characteristics. These neurons can be classified into subtypes based on the inducibility of prominent hyperpolarization-activated cation currents (h-current). They display reduced synaptic transmission and intrinsic excitability in models of Alzheimer's disease, particularly in neurons with prominent h-currents. Additionally, these neurons show altered morphology, with fewer dendritic intersections, potentially contributing to reduced neuronal activity. Furthermore, layer 5 pyramidal neurons in the anterior cingulate cortex (ACC) play a role in regulating impulsive behavior, with Gi-coupled receptors identified as potential therapeutic targets for impulse control disorders. Overall, the unique physiological and functional properties of layer 5 pyramidal neurons in the mouse prefrontal cortex make them crucial for understanding cognitive deficits and neuropsychiatric disorders.How do NSC-EVs know where to travel to the site of neural injury?
4 answers
Neural stem cells (NSCs) and their extracellular vesicles (NSC-EVs) possess the ability to migrate towards sites of neural injury through various mechanisms. NSCs exhibit directed migration in response to electric fields (EFs), while NSC-EVs can be guided by chemotaxis towards tumor sites. The inflammatory response in injured areas, characterized by factors like SDF-1α, plays a crucial role in attracting NSCs towards the site of injury. Additionally, the presence of specific receptors like CXCR4 on NSCs enables them to respond to chemotactic signals and migrate towards areas expressing these signals. Understanding these mechanisms of migration and homing of NSCs and NSC-EVs to sites of neural injury is essential for developing effective therapeutic strategies for CNS repair and brain tumor treatment.How fast synaptogenesis occur?
5 answers
Synaptogenesis occurs at varying speeds depending on the brain region and developmental stage. In the macaque monkey neocortex, the most rapid phase of synaptogenesis lasts around 40 days, centered on birth, with phase 3 being particularly modifiable by stimulation or deprivation. In the hippocampus, synaptogenesis in CA1 occurs within 30 minutes after long-term potentiation induction, with subsequent changes in presynaptic vesicles and axonal boutons observed at 2 hours. Human fetal cortical synaptogenesis initiates between the 6th and 7th gestational week, with a rapid increase in synaptic density by 12-14 weeks. The adult dentate gyrus displays asynchrony in synapse formation, with GABAergic inputs developing early but slowly, while glutamatergic inputs have a late onset and rapid maturation. These findings collectively highlight the dynamic and region-specific nature of synaptogenesis timelines.What is Aquaporins and functional?
5 answers
Aquaporins (AQPs) are integral membrane proteins that regulate water flow across cell membranes. They are crucial for various physiological functions, including hydration, wound healing, immune responses, and cell volume regulation. AQPs also facilitate the transport of small molecules like glycerol, urea, gases, ions, and other substances across membranes. In the central nervous system, AQPs play a vital role in water flux between different compartments and are implicated in brain disorders like cerebral edema. Additionally, AQPs are involved in skin hydration, barrier function, and protection against environmental stresses in the skin. The diverse functions of AQPs highlight their significance in maintaining cellular homeostasis and contributing to various physiological processes in different organs and tissues.