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14 Possible Causes for Small Hippocampi, Spike-and-Slow-Waves

  • Generalized Clonic or Tonic-Clonic Seizures

    Simple Partial Seizures Simple partial seizures only affect a small part of the brain, usually the temporal lobes or hippocampi, and are usually brief in duration, lasting[efmny.org] , poly spike discharges." [2] The clonic phase EEG will show "high amplitude activity that is typically interrrupted by slow waves to create a spike-and-slow-wave pattern.[en.wikipedia.org] According to "Harrisons Manual of Medicine," the EEG during the tonic phase will show a "progressive increase in low-voltage fast wave activity, followed by generalized high-amplitude[en.wikipedia.org]

  • Early Infantile Epileptic Encephalopathy Type 6

    (E) Coronal views of the hippocampi at 2 months show bilateral small hippocampi with left hippocampal malrotation.[neurology.org] spike and slow wave pattern of 1.5 to 2 Hz, [and it has] different seizure types.[neurologylive.com] At onset, EEG is usually normal but later spikes or poly spike-waves with a slowing of background activity are noted as well as multifocal discharges.[orpha.net]

  • Tonic-Clonic Seizure

    Simple Partial Seizures Simple partial seizures only affect a small part of the brain, usually the temporal lobes or hippocampi, and are usually brief in duration, lasting[efmny.org] The clonic phase EEG will show "high amplitude activity that is typically interrrupted by slow waves to create a spike-and-slow-wave pattern."[en.wikipedia.org] , poly spike discharges." [2] The clonic phase EEG will show "high amplitude activity that is typically interrrupted by slow waves to create a spike-and-slow-wave pattern.[en.wikipedia.org]

  • Temporal Lobe Epilepsy

    The control of water movement is achieved through a family of small integral membrane channel proteins called aquaporins (AQPs).[ncbi.nlm.nih.gov] Video electroencephalography showed that the seizure was associated with a high-amplitude spike and slow wave, originating from the right anterior temporal region and extending[ncbi.nlm.nih.gov] […] complex, polyspikes, runs of rapid spikes, sharp waves, sharp-and-slow-wave complex, slow sharp waves, spikes and spike and slow waves.[jove.com]

  • Jacksonian Seizure

    Simple partial seizures are seizures which affect only a small region of the brain, often the temporal lobes or structures found there such as the hippocampi.[en.wikipedia.org] Electro-encephalogram shows a characteristic 3 per second spike and slow wave pattern.[slideshare.net] […] region of the brain, often the temporal lobes or structures found there such as the hippocampi .[en.wikipedia.org]

  • Generalized Motor Seizure

    Simple Partial Seizures Simple partial seizures only affect a small part of the brain, usually the temporal lobes or hippocampi, and are usually brief in duration, lasting[efmny.org] , poly spike discharges." [2] The clonic phase EEG will show "high amplitude activity that is typically interrrupted by slow waves to create a spike-and-slow-wave pattern.[en.wikipedia.org] Generalized fast rhythmic spikes are seen in the tonic stage. Bursts of spikes and after-coming slow waves are synchronous with clonic jerks.[medlink.com]

  • Focal Motor Seizure

    Simple Partial Seizures Simple partial seizures only affect a small part of the brain, usually the temporal lobes or hippocampi, and are usually brief in duration, lasting[efmny.org] Figure 2: EEG showing a typical pattern of benign epilepsy with centrotemporal spikes (BECTS) with clear spike-and-slow wave discharges phase reversing (pointing towards each[childneurologyfoundation.org] […] region of the brain, often the temporal lobes or structures found there such as the hippocampi.[en.wikipedia.org]

  • Myoclonic Jerking

    Simple Partial Seizures Simple partial seizures only affect a small part of the brain, usually the temporal lobes or hippocampi, and are usually brief in duration, lasting[efmny.org] Ictal EEG : The myoclonic component is associated with a generalized spike or polyspike. The atonic component is associated with the aftergoing high voltage slow wave.[medlink.com]

  • Pitt-Hopkins Syndrome

    Additional findings reported include small hippocampi, frontal lobe hypoplasia, thin hindbrain, and delayed myelination.[ncbi.nlm.nih.gov] hippocampi, and moderate hypoplasia of the frontal lobes [ Amiel et al 2007, Marangi et al 2011, Whalen et al 2012 ].[ncbi.nlm.nih.gov] hippocampi 11 41 27 Temporal lobe hyperintensity 13 51 25 Frontal lobe hypoplasia 3 30 10 Large caudate nuclei 4 45 9 Normal birth parameters 36 41 88 1 1 Given the lack[ojrd.biomedcentral.com]

  • Smith Lemli Opitz Syndrome

    Briefly, the hippocampi or cortices were cut into small pieces, incubated with trypsin at 37 C, and triturated in order to obtain separated cells, which were then plated at[doi.org] EEGs revealed mild generalized slowing with right- and left-side parietal occipital spike-wave discharges.[doi.org]

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