Reduced brain habituation to somatosensory stimulation in patients
... later (e.g., 500 msec). Moreover, it has been observed that patients with some psychiatric diseases (e.g., schizophrenia, bipolar depression, posttraumatic stress disorder, cocaine abuse) and some pain conditions (migraine, premenstrual syndrome) show a reduced habituation of early ERP responses as ...
... later (e.g., 500 msec). Moreover, it has been observed that patients with some psychiatric diseases (e.g., schizophrenia, bipolar depression, posttraumatic stress disorder, cocaine abuse) and some pain conditions (migraine, premenstrual syndrome) show a reduced habituation of early ERP responses as ...
NVCC Bio 211 - gserianne.com
... • stimulate neurons to send impulses along sensory fibers to the brain (receptor vs. generator [action] potentials) Chemoreceptors (general) • respond to changes in chemical concentrations Pain receptors or nociceptors (general) • respond to stimuli likely to cause tissue damage Thermoreceptors (gen ...
... • stimulate neurons to send impulses along sensory fibers to the brain (receptor vs. generator [action] potentials) Chemoreceptors (general) • respond to changes in chemical concentrations Pain receptors or nociceptors (general) • respond to stimuli likely to cause tissue damage Thermoreceptors (gen ...
Multisensory brain mechanisms of bodily self
... think of oneself as oneself, have a self concept • Language: first-person and self-reflexive pronouns ...
... think of oneself as oneself, have a self concept • Language: first-person and self-reflexive pronouns ...
Vertigo
... • Does the patient experience a spinning sensation? This sensation is classic for true vertigo (vestibular end organs, vestibular nerve, vestibular nuclei). • Is the patient experiencing nausea and vomiting? (usually have labyrinthine disease) • Are any associated auditory symptoms present? ...
... • Does the patient experience a spinning sensation? This sensation is classic for true vertigo (vestibular end organs, vestibular nerve, vestibular nuclei). • Is the patient experiencing nausea and vomiting? (usually have labyrinthine disease) • Are any associated auditory symptoms present? ...
PPRF lesions at the level of abducens
... paralysis of saccades and pursuit, but the eyes can be driven to the side of the ipsilateral gaze palsy with vestibular stimulation by the oculocephalic reflex and/or cold calorics ...
... paralysis of saccades and pursuit, but the eyes can be driven to the side of the ipsilateral gaze palsy with vestibular stimulation by the oculocephalic reflex and/or cold calorics ...
2-Motor System2009-03-20 18:254.4 MB
... to perform a motor task into a series of motor command that will do the task. ...
... to perform a motor task into a series of motor command that will do the task. ...
Document
... • One-sided with nasal congestion, drooping eyelid, and irritated or watery eye; more frequent in men • Typically lasts 1–4 hours. ...
... • One-sided with nasal congestion, drooping eyelid, and irritated or watery eye; more frequent in men • Typically lasts 1–4 hours. ...
Spinal Cord and Spinal Nerves
... one region of body that is not source of stimulus. Organ pain usually referred to the skin. Both the organ and that region of the skin input to the same spinal segment and converge on the same ascending neurons. ...
... one region of body that is not source of stimulus. Organ pain usually referred to the skin. Both the organ and that region of the skin input to the same spinal segment and converge on the same ascending neurons. ...
Infancy: Physical Development
... • Myelination will allow the disorganized movements of the neonate to come under increasing control. – Myelination of motor area of the cerebral cortex begins at the 4th month of prenatal development. – Myelination of the nerves to muscles is largely developed by the age of 2 years. – Some myelinati ...
... • Myelination will allow the disorganized movements of the neonate to come under increasing control. – Myelination of motor area of the cerebral cortex begins at the 4th month of prenatal development. – Myelination of the nerves to muscles is largely developed by the age of 2 years. – Some myelinati ...
Visualizing the Brain
... complex interrelated pathways involved several different regions. The cortical association areas are all interconnected by bundles of fibers within the cerebral white matter. Collectively, the association areas integrat, diverse information for purposeful action. ...
... complex interrelated pathways involved several different regions. The cortical association areas are all interconnected by bundles of fibers within the cerebral white matter. Collectively, the association areas integrat, diverse information for purposeful action. ...
Neural Anatomy and Function
... • Sensitive to muscle tension and active contraction • Protect muscle from excess contraction force • Stimulation of GTO an afferent impulse is sent to the central nervous system • In turn, efferent impulses are sent to the… – Agonist muscle causing it to relax – Antagonist muscle causing it to cont ...
... • Sensitive to muscle tension and active contraction • Protect muscle from excess contraction force • Stimulation of GTO an afferent impulse is sent to the central nervous system • In turn, efferent impulses are sent to the… – Agonist muscle causing it to relax – Antagonist muscle causing it to cont ...
Introductory chapter
... Adrian's experiments established three fundamental facts about the neural code. First, he saw that individual sensory neurons produce stereotyped action potentials, or spikes. This is the all-or-none law, which had already been established for muscles and motor neurons: Incoming stimuli either produ ...
... Adrian's experiments established three fundamental facts about the neural code. First, he saw that individual sensory neurons produce stereotyped action potentials, or spikes. This is the all-or-none law, which had already been established for muscles and motor neurons: Incoming stimuli either produ ...
Neuroscience 14b – Organisation of the Cerebral Cortex
... o Stimulation leads to simple moves or sensory experiences. - Association Cortex o Although they are structurally organised, there is no topographic arrangement. o Bilateral representation o Asymmetric o Normally adjacent to the primary area o Their stimulation does not lead to simple reproducible e ...
... o Stimulation leads to simple moves or sensory experiences. - Association Cortex o Although they are structurally organised, there is no topographic arrangement. o Bilateral representation o Asymmetric o Normally adjacent to the primary area o Their stimulation does not lead to simple reproducible e ...
Major Parts of the Brain:
... 38. _____ Receives messages about taste 39. _____ Receives signals about scent 40. _____ Controls direct voluntary movements 41. _____ Coordinates movements that have already been learned in the past. 42. _____ Relays feelings of touch, pain, temperature, and pressure from the sensory neurons coming ...
... 38. _____ Receives messages about taste 39. _____ Receives signals about scent 40. _____ Controls direct voluntary movements 41. _____ Coordinates movements that have already been learned in the past. 42. _____ Relays feelings of touch, pain, temperature, and pressure from the sensory neurons coming ...
Chapters 11: Introduction to the Nervous System and Nervous
... 3. Neurotransmitters bind to ____________ on postsynaptic neuron 4. Ion channels open, leading to a local potential and possibly an AP if threshold is reached Postsynaptic potentials – can be Excitatory or Inhibitory: a. Excitatory postsynaptic potential (EPSP) = Membrane potential moves ___________ ...
... 3. Neurotransmitters bind to ____________ on postsynaptic neuron 4. Ion channels open, leading to a local potential and possibly an AP if threshold is reached Postsynaptic potentials – can be Excitatory or Inhibitory: a. Excitatory postsynaptic potential (EPSP) = Membrane potential moves ___________ ...
AP – All or nothing
... • With the Na+ / K+ channels closed, the cation pumps can now begin to restore the balance between the ions • Na+ is pumped out and K+ pumped in. • During this time a new action potential ...
... • With the Na+ / K+ channels closed, the cation pumps can now begin to restore the balance between the ions • Na+ is pumped out and K+ pumped in. • During this time a new action potential ...
Spinal Reflexes
... • Involves multiple synapses between sensory axons, interneurons, and motor neurons • Axons from the afferent muscle spindles can synapse onto Alpha motor neuron connected to the agonist muscle • An inhibitory interneuron connected to the antagonist muscle • Signals from the muscle spindle activate ...
... • Involves multiple synapses between sensory axons, interneurons, and motor neurons • Axons from the afferent muscle spindles can synapse onto Alpha motor neuron connected to the agonist muscle • An inhibitory interneuron connected to the antagonist muscle • Signals from the muscle spindle activate ...
Chapter 9 Part 3 Central Nervous System
... spot in the cortex (e.g. visual information goes to visual cortex, etc.) Then, the information proceeds on to its association area (e.g. visual cortex sends visual information on to the visual association area, etc.) Association areas integrate all of the sensory information into perception ...
... spot in the cortex (e.g. visual information goes to visual cortex, etc.) Then, the information proceeds on to its association area (e.g. visual cortex sends visual information on to the visual association area, etc.) Association areas integrate all of the sensory information into perception ...
Information Theory and Neural Coding
... Therefore, if r,s independent, then p(s|r)=p(s), so knowing that the neuron responded does not change my view on how likely it is that there was a stimulus, i.e. the response does not carry information about the stimulus. ...
... Therefore, if r,s independent, then p(s|r)=p(s), so knowing that the neuron responded does not change my view on how likely it is that there was a stimulus, i.e. the response does not carry information about the stimulus. ...
Allochiria
Allochiria (from the Greek meaning ""other hand"") is a neurological disorder in which the patient responds to stimuli presented to one side of their body as if the stimuli had been presented at the opposite side. It is associated with spatial transpositions, usually symmetrical, of stimuli from one side of the body (or of the space) to the opposite one. Thus a touch to the left arm will be reported as a touch to the right arm, which is also known as somatosensory allochiria. If the auditory or visual senses are affected, sounds (a person's voice for instance) will be reported as being heard on the opposite side to that on which they occur and objects presented visually will be reported as having been presented on the opposite side. Often patients may express allochiria in their drawing while copying an image. Allochiria often co-occurs with unilateral neglect and, like hemispatial neglect, the disorder arises commonly from damage to the right parietal lobe.Allochiria is often confused with alloesthesia, also known as false allochiria. True allochiria is a symptom of dyschiria and unilateral neglect. Dyschiria is a disorder in the localization of sensation due to various degrees of dissociation and cause impairment in one side causing the inability to tell which side of the body was touched.