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

Related Concept Videos

Fixed Action Patterns

Fixed Action Patterns

A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.

Schemas

Schemas

A schema is a mental construct consisting of a cluster or collection of related concepts (Bartlett, 1932). There are many different types of schemata, and they all have one thing in common: schemata are a method of organizing information that allows the brain to work more efficiently. When a schema is activated, the brain makes immediate assumptions about the person or object being observed.

You might also read

Related Articles

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

Sort by

Same author

Impact of Initial Prostate-Specific Membrane Antigen PET/CT Staging and Prostate-Specific Membrane Antigen-Targeted Biopsy on Treatment Decisions in Prostate Cancer: Results from the Phase 2 DEPROMP Trial.

Journal of nuclear medicine : official publication, Society of Nuclear Medicine·2025

Same author

Bellmunt risk score enables survival prediction in men with metastatic castration resistant prostate cancer (mCRPC) undergoing PSMA-targeted radioligand therapy (LUMEN).

European journal of nuclear medicine and molecular imaging·2025

Same author

Higher Validity, Lower Radiation: A New Ictal Single-Photon Emission Computed Tomography Framework.

Annals of neurology·2024

Same author

Amyloid and SCD jointly predict cognitive decline across Chinese and German cohorts.

Alzheimer's & dementia : the journal of the Alzheimer's Association·2024

Same author

Intramedullary leukocytoclastic vasculitis and neutrophil extracellular trap (NET) formation in POEMS syndrome.

Annals of hematology·2024

Same author

Cortical Amyloid Burden Relates to Basal Forebrain Volume in Subjective Cognitive Decline.

Journal of Alzheimer's disease : JAD·2023

Search research articles

Related Experiment Video

Updated: May 13, 2026

An Operant Intra-/Extra-dimensional Set-shift Task for Mice

An Operant Intra-/Extra-dimensional Set-shift Task for Mice

Published on: January 22, 2016

PET/MR: a paradigm shift.

Florian C Gaertner¹, Sebastian Fürst, Markus Schwaiger

¹Technische Universität München, Klinikum rechts der Isar, Department of Nuclear Medicine, Ismaninger Str. 22, 81675 München, Germany. florian.gaertner@tum.de

Cancer Imaging : the Official Publication of the International Cancer Imaging Society

|March 1, 2013

Summary

Positron emission tomography/magnetic resonance (PET/MR) offers advanced imaging by combining PET with MR, differing significantly from PET/computed tomography (PET/CT). Further clinical data is needed to define PET/MR

More Related Videos

Paw-Print Analysis of Contrast-Enhanced Recordings (PrAnCER): A Low-Cost, Open-Access Automated Gait Analysis System for Assessing Motor Deficits

Paw-Print Analysis of Contrast-Enhanced Recordings (PrAnCER): A Low-Cost, Open-Access Automated Gait Analysis System for Assessing Motor Deficits

Published on: August 12, 2019

New Variations for Strategy Set-shifting in the Rat

New Variations for Strategy Set-shifting in the Rat

Published on: January 23, 2017

Related Experiment Videos

Last Updated: May 13, 2026

An Operant Intra-/Extra-dimensional Set-shift Task for Mice

An Operant Intra-/Extra-dimensional Set-shift Task for Mice

Published on: January 22, 2016

Paw-Print Analysis of Contrast-Enhanced Recordings (PrAnCER): A Low-Cost, Open-Access Automated Gait Analysis System for Assessing Motor Deficits

Paw-Print Analysis of Contrast-Enhanced Recordings (PrAnCER): A Low-Cost, Open-Access Automated Gait Analysis System for Assessing Motor Deficits

Published on: August 12, 2019

New Variations for Strategy Set-shifting in the Rat

New Variations for Strategy Set-shifting in the Rat

Published on: January 23, 2017

Area of Science:

Medical Imaging
Hybrid Imaging Modalities
Radiology

Background:

Positron emission tomography/computed tomography (PET/CT) is a standard cancer imaging tool.
The advent of combined PET/MR systems introduces a novel hybrid imaging modality.
PET/MR integrates PET's functional data with MR's detailed morphologic and functional imaging capabilities.

Purpose of the Study:

To provide an overview of the principal differences between PET/CT and PET/MR.
To discuss scanner design, data acquisition, processing, and reconstruction variations.
To explore the potential clinical applications and future role of PET/MR.

Main Methods:

Comparative analysis of PET/CT and PET/MR technologies.
Examination of scanner design, attenuation correction, speed, and protocols.
Review of radiation exposure and safety considerations.

Main Results:

Fundamental differences exist between CT and MR imaging, impacting PET/CT and PET/MR.
PET/MR presents distinct advantages in applications where MR excels, particularly in soft tissue contrast.
Current clinical data on PET/MR performance remains limited, necessitating further investigation.

Conclusions:

PET/MR holds promise for enhanced diagnostic capabilities, especially in oncology, neurology, and cardiology.
The clinical utility of PET/MR is still under evaluation, with ongoing research into its performance.
Understanding the technical and interpretative differences is crucial for optimizing PET/MR utilization.