A critical and descriptive approach to interictal behavior with the Neurobehavior Inventory (NBI)

Guilherme Nogueira M. de Oliveira, Arthur Kummer, Renato Luiz Marchetti, Gerardo Maria de Araújo Filho, João Vinícius Salgado, Anthony S. David, Antônio Lúcio Teixeira

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Purpose: The purpose of this study was to test the psychometric properties of the Neurobehavior Inventory (NBI) in a group of temporal lobe epilepsy (TLE) patients from a tertiary care center, correlating its scores with the presence of psychiatric symptoms. Methods: Clinical and sociodemographic data from ninety-six TLE outpatients were collected, and a neuropsychiatric evaluation was performed with the following instruments: Mini-Mental State Examination (MMSE), structured psychiatric interview (MINI-PLUS), Neurobehavior Inventory (NBI), and Hamilton Depression Rating Scale (HAM-D). Results: Some traits evaluated by the NBI showed adequate internal consistency (mean inter-item correlation between 0.2 and 0.4) and were frequent, such as religiosity (74%) and repetitiveness (60.4%). Principal component analysis showed three factors, named here as emotions (Factor 1), hyposexuality (Factor 2), and unusual ideas (Factor 3). Depressive symptoms on HAM-D showed a strong association with emotions and hyposexuality factors. When patients with left TLE and right TLE were compared, the former exhibited more sadness (p. =0.017), and the latter, a greater tendency toward sense of personal destiny (p. =0.028). Conclusion: Depression influences NBI scoring, mainly emotionality and hyposexuality traits. Neurobehavior Inventory subscales can be better interpreted with an appropriate evaluation of comorbid mood and anxiety disorders. Compromise in left temporal mesial structures is associated with increased tendency toward sad affect, whereas right temporal pathology is associated with increased beliefs in personal destiny.

Original languageEnglish (US)
Pages (from-to)334-340
Number of pages7
JournalEpilepsy and Behavior
Issue number3
StatePublished - Nov 2012
Externally publishedYes


  • Depression
  • Gastaut-Geschwind syndrome
  • Interictal behavior
  • Neurobehavior Inventory
  • Psychiatric disorders
  • Temporal lobe epilepsy

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology
  • Behavioral Neuroscience


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