Seizure Localization Flashcards
Somatosensory phenomenon:
- Jacksonian March
- Well Defined
- Slow spread
(mostly CL)
Primary somatosensory area (Parietal lobe)
Somatosensory phenomenon: Ill defined, may be accompanied by pain. Fast spread
(IL or CL)
Supplementary somatosensory
- Posterior Insula
- Parietal operculum
- Diffuse contralateral or Bilateral tingling
- Sensation of movement
Supplementary Motor Area
- Cephalic sensation
- Nonvertiginous Dizziness
(often) frontal lobe
- Ictal Headache
(IL)
Temporal or Occipital
Gustatory Aura (metalic / rubbery)
- Insula
- Rolandic Operculum
- Parietal
Elementary Auditory
(CL)
- Contralateral primary auditory cortex
Olfactory Aura
Anterior mesial temporal (“uncinate fits”)
Visual aura
Contralateral Occipital
Ictal Blindness
Contralateral occipital
Deja vous / Jamais vou
Mesiotemporal (w/o lateralization)
Forced thinking: more verbal
Dominant frontal
Forced thinking: more emotional
Dominant mesiotemporal
Ictal Fear
Amygdala or Cingulate
Ecstatic Aura
Amygdala or Cingulate
Orgasmic Aura
- Non-Dominant Mesiotemporal
- Parasaggital
initial autoscopy (“out of body” sensation)
Non-dominant parietal
Forced Head turn (>5 sec)
94% PPV CL (mostly temporal or frontal)
Head turn: early, non-forced)
IL
- Temporal
- Basal Ganglia
Head / Eye deviation AFTER GTC
typically Ipsilateral
“Y sign”
SSMA or SMA
Tonic Seizure
often frontal lobe (medial SMA)
Gyratory Seizures with forced head turn
CL frontotemporal
Gyratory Seizure with en bloc version
IL
Gyratory seizure with rotation to prone
frontal
Ictal smile
non-dominant parietal
ictal pouting (chapeau de gendarme)
- Mesial frontal
- Angulate cingulate
Behavioral arrest
- Temporal
- Orbitofrontal
Bizarre behavior
Orbitofrontal
Automatisms: manipulative unilateral limb
Ipsilateral
Automatisms: proximal, non-manipulative
Contralateral temporal
Oral automatisms (lip smacking, chewing, sucking, swallowing)
- Temporal
- inferomedial
- hippocampal
Automatisms: bipedal
Frontal
Ictal cough
Dominant
postictal cough
non-dominant
Ictal eyeblinks: unilateral
Ipsilateral
Ictal eyeblinks: Bilateral
Occipital
Gelastic
- Hypothalamic
- Mesial temporal
- Frontal cingulate
Ictal crying / weeping (Dacrystic seizures) w/o gelastic component
- Non-dominant mesiotemporal
- Non-dominant mesial frontal
Ictal crying / weeping (Dacrystic) WITH gelastic component
hypothalamic
Genital aura
Ipsilateral
Ictal nystagmus
CL frontal / Occipital
Ictal spitting
Non-dominant temporal
postictal nose wiping
IL temporal (90% PPV)
Ictal / postictal drinking
Non-dominant temporal
Ictal tachycardia
No localization
Ictal bradycardia / asystole
Temporal»_space; frontal
Ictal Dyspnea
links to insula
ictal urinary urge
non-dominant temporal
Ictal emesis
- Non-dominant temporal / anterior insula
- Benign occipital (Panayiotopoulos syndrome)
piloerection
IL (often dominant) temporal
Ictal Vertigo
Insular-temporal-parietal junction
Epigastric rising
Temporal > orbitofrontal > Cingulate
Ictal speech arrest / Jargon
Dominant Temporal
postictal dysphasia / aphasia
Dominant Temporal
PRESERVED SPEECH during seizure
Non-dominant temporal
Guttural vocalizations
frontal lobe (orbitofrontal or parasagittal)
Ictal humming / singing
Poorly lateralized
- temporal lobe
- pre-frontal cortex