Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Frontal lesions increase post-target interference in rapid stimulus streams

F Richer1, M Lepage

  • 1Service de Neurologie, Hôpital Notre-Dame, Université du Québec à Montréal, Canada.

Neuropsychologia
|June 1, 1996
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Defining a recovery definition and core outcomes of psychosis: protocol of an international Delphi consensus study.

East Asian archives of psychiatry : official journal of the Hong Kong College of Psychiatrists = Dong Ya jing shen ke xue zhi : Xianggang jing shen ke yi xue yuan qi kan·2026
Same author

Pre-onset subthreshold psychotic symptoms are associated with differential treatment delays before a first episode of psychosis: Initial evidence and implications.

Schizophrenia research·2024
Same author

Social and occupational recovery in early psychosis: a systematic review and meta-analysis of psychosocial interventions.

Psychological medicine·2021
Same author

Pre-onset sub-threshold psychotic symptoms and cortical organization in the first episode of psychosis.

Progress in neuro-psychopharmacology & biological psychiatry·2020
Same author

Medication adherence in first episode psychosis: the role of pre-onset subthreshold symptoms.

Acta psychiatrica Scandinavica·2019
Same author

Anxiety in youth at clinical high risk for psychosis: A case study and conceptual model.

Schizophrenia research·2019

Frontal lobe damage impairs attention, causing difficulties in identifying target stimuli in rapid visual streams. This study highlights how frontal lesions affect attentional processes and target discrimination.

Area of Science:

  • Neuroscience
  • Cognitive Psychology

Background:

  • Attentional processes are crucial for discriminating target stimuli.
  • Frontal lobe functions are implicated in attention and executive control.

Purpose of the Study:

  • To investigate the impact of frontal lesions on attentional processes.
  • To compare attentional deficits in patients with frontal excisions versus temporal excisions and healthy controls.

Main Methods:

  • Participants identified target letters (T1, T2) in rapid visual streams at varying presentation rates (6, 8, 10 letters/sec).
  • The separation between T1 and T2 was manipulated (0, 2, 4, or 6 letters).
  • Performance was compared between patients with frontal excisions, temporal excisions, and normal controls.

Main Results:

Related Experiment Videos

  • Normal and temporal groups correctly identified T1 and showed expected T2 interference at high rates.
  • Frontal group exhibited T2 interference at lower rates and T1 identification failures at high rates.
  • Frontal patients demonstrated significant attentional deficits in target discrimination.

Conclusions:

  • Frontal lesions disrupt attentional processes, particularly in rapid visual processing.
  • An inertia in target discrimination processes likely contributes to frontal attention deficits.
  • Findings underscore the role of the frontal lobe in maintaining attentional focus and processing sequential stimuli.