| Title |
Pupil Size Changes as an Active Information Channel for Biofeedback Applications
|
|---|---|
| Published in |
Applied Psychophysiology and Biofeedback, April 2016
|
| DOI | 10.1007/s10484-016-9335-z |
| Pubmed ID | |
| Authors |
Jan Ehlers, Christoph Strauch, Juliane Georgi, Anke Huckauf |
| Abstract |
Pupil size is usually regarded as a passive information channel that provides insight into cognitive and affective states but defies any further control. However, in a recent study (Ehlers et al. 2015) we demonstrate that sympathetic activity indexed by pupil dynamics allows strategic interference by means of simple cognitive techniques. Utilizing positive/negative imaginings, subjects were able to expand pupil diameter beyond baseline variations; albeit with varying degrees of success and only over brief periods. The current study provides a comprehensive replication on the basis of considerable changes to the experimental set-up. Results show that stricter methodological conditions (controlled baseline settings and specified user instructions) strengthen the reported effect, whereas overall performance increases by one standard deviation. Effects are thereby not restricted to pupillary level. Parallel recordings of skin conductance changes prove a general enhancement of induced autonomic arousal. Considering the stability of the results across studies, we conclude that pupil size information exceeds affective monitoring and may constitute an active input channel in human-computer interaction. Furthermore, since variations in pupil diameter reliably display self-induced changes in sympathetic arousal, the relevance of this parameter is strongly indicated for future approaches in clinical biofeedback. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Italy | 1 | 50% |
| Unknown | 1 | 50% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Scientists | 2 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 61 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Turkey | 1 | 2% |
| Poland | 1 | 2% |
| Unknown | 59 | 97% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 9 | 15% |
| Student > Master | 9 | 15% |
| Student > Bachelor | 8 | 13% |
| Researcher | 7 | 11% |
| Professor | 5 | 8% |
| Other | 9 | 15% |
| Unknown | 14 | 23% |
| Readers by discipline | Count | As % |
|---|---|---|
| Psychology | 17 | 28% |
| Neuroscience | 11 | 18% |
| Computer Science | 5 | 8% |
| Engineering | 4 | 7% |
| Social Sciences | 2 | 3% |
| Other | 8 | 13% |
| Unknown | 14 | 23% |
Attention Score in Context
This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 25 July 2022.
All research outputs
#14,906,966
of 23,849,058 outputs
Outputs from Applied Psychophysiology and Biofeedback
#228
of 355 outputs
Outputs of similar age
#162,731
of 300,734 outputs
Outputs of similar age from Applied Psychophysiology and Biofeedback
#3
of 5 outputs
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