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Using eye movement analysis to study auditory effects on visual memory recall.

Marandi RZ, Sabzpoushan SH - Basic Clin Neurosci (2014)

Bottom Line: The method was validated with eight different participants.Recognition rate in "with sound" stage was significantly reduced as compared with "without sound" stage.The result demonstrated that the familiarity of visual-auditory stimuli can be detected from EOG signals and the auditory input potentially improves the visual recall process.

View Article: PubMed Central - PubMed

Affiliation: Department of Biomedical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran.

ABSTRACT
Recent studies in affective computing are focused on sensing human cognitive context using biosignals. In this study, electrooculography (EOG) was utilized to investigate memory recall accessibility via eye movement patterns. 12 subjects were participated in our experiment wherein pictures from four categories were presented. Each category contained nine pictures of which three were presented twice and the rest were presented once only. Each picture presentation took five seconds with an adjoining three seconds interval. Similarly, this task was performed with new pictures together with related sounds. The task was free viewing and participants were not informed about the task's purpose. Using pattern recognition techniques, participants' EOG signals in response to repeated and non-repeated pictures were classified for with and without sound stages. The method was validated with eight different participants. Recognition rate in "with sound" stage was significantly reduced as compared with "without sound" stage. The result demonstrated that the familiarity of visual-auditory stimuli can be detected from EOG signals and the auditory input potentially improves the visual recall process.

No MeSH data available.


A participant during experiment
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Figure 0001: A participant during experiment

Mentions: An experimental paradigm was used to the study decision making process. the experiment conducted during this study comprised visual stimuli presentation to participants while recording their EOG signals. As it shown in Fig. 1, the experiment was conducted in a dim-lit, quiet room. For distinct and near to real world eye movements, visual stimuli were presented on a 116×66 cm screen by a video projector. The resolution of presented pictures as visual stimuli was 640×480 pixels. The stimuli were designed and implemented using Adobe Flash software. Participants were instructed on how to do the tasks using the interactive multimedia instructions running on a computer before the experiment. Moreover, instructions were also shown to the participants in text format before the task onset. Participants were requested to sit on an armchair and adjust their position such that their eyes were facing the center of the screen. Participant's distance to the screen was between 160 and 170 cm. The experiment was conducted in Brain-Computer Interface laboratory of Iran Neural Technology Research Centre.


Using eye movement analysis to study auditory effects on visual memory recall.

Marandi RZ, Sabzpoushan SH - Basic Clin Neurosci (2014)

A participant during experiment
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4202595&req=5

Figure 0001: A participant during experiment
Mentions: An experimental paradigm was used to the study decision making process. the experiment conducted during this study comprised visual stimuli presentation to participants while recording their EOG signals. As it shown in Fig. 1, the experiment was conducted in a dim-lit, quiet room. For distinct and near to real world eye movements, visual stimuli were presented on a 116×66 cm screen by a video projector. The resolution of presented pictures as visual stimuli was 640×480 pixels. The stimuli were designed and implemented using Adobe Flash software. Participants were instructed on how to do the tasks using the interactive multimedia instructions running on a computer before the experiment. Moreover, instructions were also shown to the participants in text format before the task onset. Participants were requested to sit on an armchair and adjust their position such that their eyes were facing the center of the screen. Participant's distance to the screen was between 160 and 170 cm. The experiment was conducted in Brain-Computer Interface laboratory of Iran Neural Technology Research Centre.

Bottom Line: The method was validated with eight different participants.Recognition rate in "with sound" stage was significantly reduced as compared with "without sound" stage.The result demonstrated that the familiarity of visual-auditory stimuli can be detected from EOG signals and the auditory input potentially improves the visual recall process.

View Article: PubMed Central - PubMed

Affiliation: Department of Biomedical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran.

ABSTRACT
Recent studies in affective computing are focused on sensing human cognitive context using biosignals. In this study, electrooculography (EOG) was utilized to investigate memory recall accessibility via eye movement patterns. 12 subjects were participated in our experiment wherein pictures from four categories were presented. Each category contained nine pictures of which three were presented twice and the rest were presented once only. Each picture presentation took five seconds with an adjoining three seconds interval. Similarly, this task was performed with new pictures together with related sounds. The task was free viewing and participants were not informed about the task's purpose. Using pattern recognition techniques, participants' EOG signals in response to repeated and non-repeated pictures were classified for with and without sound stages. The method was validated with eight different participants. Recognition rate in "with sound" stage was significantly reduced as compared with "without sound" stage. The result demonstrated that the familiarity of visual-auditory stimuli can be detected from EOG signals and the auditory input potentially improves the visual recall process.

No MeSH data available.