title: Visual processing in the inferior temporal cortex: an intracranial event related potential study.
abstract: OBJECTIVE
  To investigate visual processing over the inferior temporal cortex (ITC) by recording intracranial event-related potentials (IERPs), and correlating the results with those of electrocortical stimulation mapping (ESM).
  
  
  METHODS
  IERPs to word, non-word, and non-letter visual stimuli were recorded over the ITC in 6 patients with intractable epilepsy. Two patients underwent ESM of the same contacts.
  
  
  RESULTS
  IERPs were observed at 18 electrodes in 4 out of 6 patients. Nine electrodes showed early IERPs (peak latency ≤ 200 ms) over the posterior and middle ITC and 7 of them showed a following late ERP component, "early+late IERPs". Nine electrodes showed late IERPs (peak latency>200 ms) over the middle and anterior ITC. Among four electrodes showing language or visual phenomena by ESM, one electrode showed a short latency IERP, another electrode showed a late IERP, and the remaining two electrodes showed no IERPs.
  
  
  CONCLUSIONS
  Our findings further support that the visual recognition occurred sequentially from posterior to anterior ITC. Dissociation of IERPs and ESM may be explained by the methodological difference.
  
  
  CONCLUSIONS
  IERP study disclosed that visual recognition occurred sequentially from posterior to anterior ITC.
authors.affiliation: Epilepsy Center, Neurological Institute, University Hospitals Case Medical Center, Cleveland, OH, USA.
authors.forename: Takefumi
authors.initials: T
authors.lastname: Hitomi
authors.forename: Mohamad Z
authors.initials: MZ
authors.lastname: Koubeissi
authors.forename: Farhad
authors.initials: F
authors.lastname: Kaffashi
authors.forename: John
authors.initials: J
authors.lastname: Turnbull
authors.forename: Hans O
authors.initials: HO
authors.lastname: Lüders
mesh_terms: D000293:Adolescent; D000328:Adult; D001931:Brain Mapping; D002648:Child; D004292:Dominance, Cerebral / Q000502:physiology; D004567:Electrodes, Implanted; D004569:Electroencephalography; D004827:Epilepsy / Q000503:physiopathology / Q000601:surgery; D005071:Evoked Potentials / Q000502:physiology*; D005074:Evoked Potentials, Visual / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D010775:Photic Stimulation; D011932:Reading; D013355:Subdural Space / Q000502:physiology; D013702:Temporal Lobe / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*