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What does 'non-specific shallow cortical hyper density in left post-central gyrus' mean


Cortical means pertaining to the outer layer or rind of the cerebrum, the cerebral cortex. This is where most of the neuron cell bodies are—the centres of thought, sensation, memory, muscle control, speech, etc. It’s the “gray matter” of the brain (most of it, anyway).Gyrus means... Read More

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What are the early warning signs of a possible brain tumour


Common symptoms include:Headache, which can be severe and worsening with activity or in the morningSeizures. People may have different types of seizures. Some medicines can help prevent or control them. Motor seizures, also known as convulsions, are sudden involuntary movements of a person's mus... Read More

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Does a lack of white matter in the brain cause movement disorders


White matter refers to the myelin sheath around a nerve.In the picture below, the top part shows a myelinated nerve - which looks like a long sausage. The spaces between each sausage link is called a node of Ranvier. The node is an open area - the only place on the axon where the exchange of Na+... Read More

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What are some theoretical ways that many neurological diseases could be cured


A genetic marker is a DNA sequence with a known physical location on a chromosome. DNA segments close to each other on a chromosome tend to be inherited together. Genetic markers are used to track the inheritance of a nearby gene that has not yet been identified, b... Read More

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Why does our left hemisphere of brain control our right side of our body and the right our left


Because of a phenomenon called Neuronal Decussation.Our bodies move and work through muscle contractions. Those contractions are facilitated by neuronal impulses delivered by motor neurons that arise from the spinal cord (To be more specific, the anterior horn of the gray matter in the spinal co... Read More

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What must a neurotransmitter cross in order to excite or inhibit an action potential in a receiving neuron


Most neurotransmitter molecules get released from axon terminals, and the cross the synaptic cleft through diffusion.They then bind to receptors embedded in the membrane of the postsynaptic cell.Neurotransmitters do not directly excite or inhibit action potentials per se. They can raise or lower... Read More

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Parkinson's disease is caused by the loss of dopamine production. Are there other diseases that affect different neurotransmitters similarly


I would be cautious with saying that Parkinson’s disease (PD) is caused by the loss of dopamine production. The pathogenesis of PD is rather complex and not yet quite understood. But let’s say the majority of the symptoms in PD can be attributed to the degeneration of dopaminergic neurons in subs... Read More

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How does meditation rewire the brain


How does Meditation rewire the brain? No one know what happens to the individual neurons during Meditation. However, we can get an idea of how rewiring of neurons occur in a stroke patient.If the post central gyrus of right side of the brain is damaged during stroke the patient loses the abi... Read More

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Why does the human brain have so many deep crevasses


The human brain has two types of crevasse, mostly seen on the surface.The first type of crevasse is the longitudinal fissure. It is the deepest and oldest, as vertebrate brains all divided into two largely independent, cooperating hemispheres. It reaches down into the centre of the brain, whe... Read More

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What’s the point of neurotransmitters, and why not just have a long neuron


Neurotransmitters likely evolved because of long neurons, not in spite of them. A long neuron is a useful tool, but it’s just a cellular extension that doesn’t do much by itself. It is the neurotransmitters that actually communicate information from that long neuron to its downstream targets... Read More

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What actually happens to an impulse after reaching the brain


The photons of the light which fall on the object are reflected by it and are incident on the retina. The retina senses the frequency and wavelengths of these photons. The retina can sense the wavelength between 400–700 Nano-meters.Just to give a quick comparison, if electromagnetic waves belong... Read More

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What causes Parkinson's disease


In Parkinson's disease (PD), certain nerve cells (neurons) in the brain gradually break down or die. Many of the symptoms are due to a loss of neurons that produce a chemical messenger in your brain called dopamine. When dopamine levels decrease, it causes abnormal brain activity, leading t... Read More

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What are some of the most unusual brains


The brain of Kim Peek, the real-life 'savant' on whom Dustin Hoffman's character in the film Rain Man is based, was truly an unusual one.Peek was born in with macrocephaly (large cranium), damage to the cerebellum (related to motor skills), and agenesis of the corpus cal... Read More

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What is deep brain stimulation for Parkinson's Disease


Deep brain stimulation is a surgical technique to treat the symptoms of Parkinson’s disease such as tremor, rigidity, stiffness, slowed movement and difficulty in walking. The procedure is performed on those who have not benefited from medications.The deep brain stimulation system has three compo... Read More

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Which type of neuron is absent in the peripheral nervous system


The peripheral nervous system contains afferent sensory neurons that propagate action potentials to the CNS via electrochemical junctures called synapses, using Neuro transmitters as chemical messengers.The peripheral nervous system also contains efferent motor neurones that propagate action pote... Read More

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What are the main major symptoms of brain tumors


Tumors in any part of the brain may cause the pressure inside the skull (known as intracranial pressure) to rise. This can be caused by growth of the tumor itself, swelling in the brain, or blockage of the flow of cerebrospinal fluid (CSF). Increased pressure can lead to general symptoms such as... Read More

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Do you think psychopathy is a psychiatric disorder, a neurological disorder or both


Neither.Psychopathy is a fancy term dreamt up by psychiatrists.The reality is that there are humane people and there are inhumane people. The inhumane people are basically malignant souls or dark conscious being. Their consciousness is reduced by their own efforts over many lifetimes.They deaden... Read More

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What is it like to have synesthesia


I have a few types of synesthesia, although I'd consider them to be more of the boring types-1. Associative colour-letter/number-This means that I associate letters, numbers, and words with different colours, but don't actually see them.2. Misophonia:is also considered a type of synesth... Read More

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