Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Video

Updated: May 8, 2026

Performing Behavioral Tasks in Subjects with Intracranial Electrodes

Performing Behavioral Tasks in Subjects with Intracranial Electrodes

Published on: October 2, 2014

Task and spatial frequency modulations of object processing: an EEG study.

Matt Craddock¹, Jasna Martinovic, Matthias M Müller

¹Institute of Psychology, University of Leipzig, Germany. matt.craddock@uni-leipzig.de

|August 13, 2013

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

Corrigendum to 'Russian blues reveal the limits of language influencing colour discrimination' [Cognition 201, August 2020, 104281].

Cognition·2026

Same author

Cognition does not automatically influence perception: Evidence from neural encoding of colors belonging to different categories.

Proceedings of the National Academy of Sciences of the United States of America·2026

Same author

Electrophysiology of vision: systems and signals.

Vision research·2026

Same author

Competition for Limited Visual Capacity Follows Feedforward Processing of a Distractor.

Journal of cognitive neuroscience·2026

Same author

Contour integration in the parafovea and the near periphery: testing the association field account.

Proceedings. Biological sciences·2025

Same author

Alpha-band fluctuations represent behaviorally relevant excitability changes as a consequence of top-down guided spatial attention in a probabilistic spatial cueing design.

Imaging neuroscience (Cambridge, Mass.)·2025

Same journal

Analysis of strength degradation of coal and rock masses and stability of mined areas under long term immersion environment.

PloS one·2026

Same journal

Biogenic Silver-Selenium nanocomposite with anticancer activity and potent efficacy against vancomycin-resistant Staphylococcus aureus.

PloS one·2026

Same journal

Preparation and physicochemical characterization of a biodegradable chitosan/carboxymethyl cellulose hydrogel synthesized in NaOH/urea medium.

PloS one·2026

Same journal

Action-guilt, survivor-guilt, and depression in combat-related PTSD.

PloS one·2026

Same journal

Explainable machine learning for predicting activities of daily living at discharge in stroke patients: A retrospective study using SHAP interpretability.

PloS one·2026

Same journal

Deep learning based two-way feature depiction model for brain tumor detection.

PloS one·2026

See all related articles

Object categorization relies on spatial frequencies. Early visual processing shows differences between high (HSF) and low (LSF) spatial frequencies, independent of categorization task, while later brain responses reflect cognitive factors.

Area of Science:

Cognitive Neuroscience
Visual Perception
Neuroimaging

Background:

Visual object recognition involves processing spatial frequencies, with a potential coarse-to-fine sequence.
Object categorization can occur at superordinate, basic, or subordinate levels.
The influence of spatial frequency content on different categorization levels and its neural correlates are not fully understood.

Purpose of the Study:

To investigate whether object categorization at different levels (superordinate vs. basic) relies on distinct spatial frequency ranges.
To examine if these spatial frequency dependencies are reflected in electroencephalography (EEG) signals.
To explore the temporal dynamics of visual object processing using event-related potentials (ERPs) and time-frequency (TF) analysis.

Main Methods:

More Related Videos

Extracting Visual Evoked Potentials from EEG Data Recorded During fMRI-guided Transcranial Magnetic Stimulation

Extracting Visual Evoked Potentials from EEG Data Recorded During fMRI-guided Transcranial Magnetic Stimulation

Published on: May 12, 2014

Related Experiment Videos

Last Updated: May 8, 2026

Performing Behavioral Tasks in Subjects with Intracranial Electrodes

Performing Behavioral Tasks in Subjects with Intracranial Electrodes

Published on: October 2, 2014

Extracting Visual Evoked Potentials from EEG Data Recorded During fMRI-guided Transcranial Magnetic Stimulation

Extracting Visual Evoked Potentials from EEG Data Recorded During fMRI-guided Transcranial Magnetic Stimulation

Published on: May 12, 2014

Utilized EEG to record brain activity during object processing tasks.
Employed ERP and TF analysis to examine the time course of neural responses.
Filtered object images into high spatial frequencies (HSF) and low spatial frequencies (LSF).
Participants performed either a grammatical gender-classification task (basic-level) or a living/non-living judgment task (superordinate-level).

Main Results:

Early visual components (P1, N1) showed differences between HSF and LSF stimuli, unaffected by categorization task.
A later fronto-central negativity (N350) was more pronounced in the basic-level categorization task, suggesting involvement in semantic or syntactic processing.
No significant effects of task or spatial frequency were found on gamma band responses.

Conclusions:

Early visual processing of HSF and LSF content occurs independently of the categorization level.
Later neural responses, such as the N350, are modulated by higher-level cognitive factors like categorization task demands.
These findings contribute to understanding the interplay between spatial frequency, object categorization, and neural processing.