Can attention for itch stimuli be modified?

Attentional bias modification (ABM) training for itch

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

NL-OMON

Registry ID

NL-OMON22800

Enrollment

120

Registered

2017-03-15

Start date

2017-03-15

Completion date

Unknown

Last updated

2024-02-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

attention

Interventions

In line with previously applied attentional bias modification (ABM) trainings for pain (e.g., Dehghani et al., 2004

Haggman et al., 2010

McGowan et al., 2009

Sharpe et al., 2010, 2012, 2014), we developed an ABM training for itch. In this training, a modified dot-probe task will be used in which itch-related pictures are paired with neutral pictures. In th

Eligibility

Inclusion criteria

Inclusion criteria: Volunteers aged between 18 and 30 years and with understanding of the Dutch language

Exclusion criteria

Exclusion criteria: - Current itch or pain of at least 3 on a scale from 0 (no itch/pain) to 10 (worst imaginable itch/pain) - Diagnosis of a chronic itch or pain condition such as eczema, rheumatoid arthritis. - Psychiatric diagnosis, such as major depression or AD(H)D. - Colour blindness - Dyslexia - Reduced vision which is not corrected by glasses or contact lenses

Design outcomes

Primary

Measure	Time frame
An attentional bias index, i.e. the difference between the average reaction time for incongruent trials (at the location of the neutral stimulus) and the average reaction time for congruent trials (at the location of the itch stimulus), will be the primary outcome measure. The attentional bias index for the post ABM dot-probe task will be compared across the three conditions, while taking into account the attentional bias index during the pre-ABM dot-probe task.	—

Measure

Time frame

An attentional bias index, i.e. the difference between the average reaction time for incongruent trials (at the location of the neutral stimulus) and the average reaction time for congruent trials (at the location of the itch stimulus), will be the primary outcome measure. The attentional bias index for the post ABM dot-probe task will be compared across the three conditions, while taking into account the attentional bias index during the pre-ABM dot-probe task.

—

Secondary

Measure	Time frame
Secondarily, generalization to another stimulus modality will be investigated by comparing the conditions on the attentional bias index for the word stimuli and differences in sensitivity to touch evoked itch will be assessed across conditions. It is planned to explore the temporal dynamics of attention allocation over time (e.g., Davis et al., 2016, Zvielli et al., 2016) for both the itch pictures and words across the conditions.	—

Measure

Time frame

Secondarily, generalization to another stimulus modality will be investigated by comparing the conditions on the attentional bias index for the word stimuli and differences in sensitivity to touch evoked itch will be assessed across conditions. It is planned to explore the temporal dynamics of attention allocation over time (e.g., Davis et al., 2016, Zvielli et al., 2016) for both the itch pictures and words across the conditions.

—

Contacts

Public ContactA.I.M. van Laarhoven

Leiden University - Health, Medical, and Neuropsychology unit

a.vanlaarhoven@fsw.leidenuniv.nl+31715276634

Outcome results

None listed

Source: NL-OMON (via WHO ICTRP)