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Looking as if you know: Systematic object inspection precedes object recognition
Umeå universitet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi.ORCID-id: 0000-0001-6105-2929
Umeå universitet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi.ORCID-id: 0000-0002-1407-9288
Umeå universitet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi.ORCID-id: 0000-0003-4088-0025
2008 (Engelska)Ingår i: Journal of Vision, E-ISSN 1534-7362, nr 4, artikel-id 14Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Sometimes we seem to look at the very object we are searching for, without consciously seeing it. How do we select object relevant information before we become aware of the object? We addressed this question in two recognition experiments involving pictures of fragmented objects. In Experiment 1, participants preferred to look at the target object rather than a control region 25 fixations prior to explicit recognition. Furthermore, participants inspected the target as if they had identified it around 9 fixations prior to explicit recognition. In Experiment 2, we investigated the influence of semantic knowledge in guiding object inspection prior to explicit recognition. Consistently, more specific knowledge about target identity made participants scan the fragmented stimulus more efficiently. For instance, non-target regions were rejected faster when participants knew the target object's name. Both experiments showed that participants were looking at the objects as if they knew them before they became aware of their identity.

Ort, förlag, år, upplaga, sidor
Association for Research in Vision and Ophthalmology (ARVO) , 2008. nr 4, artikel-id 14
Nyckelord [en]
object recognition, eye movment, visual awareness, attention
Nationell ämneskategori
Psykologi (exklusive tillämpad psykologi)
Identifikatorer
URN: urn:nbn:se:umu:diva-2444DOI: 10.1167/8.4.14ISI: 000255976000014PubMedID: 18484853Scopus ID: 2-s2.0-42349101695OAI: oai:DiVA.org:umu-2444DiVA, id: diva2:140450
Anmärkning

Originally included in thesis in manuscript form with title: "Looking as if you know: Implicit identification guides the eyes in object recognition". 

Tillgänglig från: 2007-06-12 Skapad: 2007-06-12 Senast uppdaterad: 2023-09-07Bibliografiskt granskad
Ingår i avhandling
1. Predictive eyes precede retrieval: visual recognition as hypothesis testing
Öppna denna publikation i ny flik eller fönster >>Predictive eyes precede retrieval: visual recognition as hypothesis testing
2007 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Does visual recognition entail verifying an idea about what is perceived? This question was addressed in the three studies of this thesis. The main hypothesis underlying the investigation was that visual recognition is an active process involving hypothesis testing. Recognition of faces (Study 1), scenes (Study 2) and objects (Study 3) was investigated using eye movement registration as a window on the recognition process. In Study 1, a functional relationship between eye movements and face recognition was established. Restricting the eye movements reduced recognition performance. In addition, perceptual reinstatement as indicated by eye movement consistency across study and test was related to recollective experience at test. Specifically, explicit recollection was related to higher eye movement consistency than familiarity-based recognition and false rejections (Studies 1-2). Furthermore, valid expectations about a forthcoming stimulus scene produced eye movements which were more similar to those of an earlier study episode, compared to invalid expectations (Study 2). In Study 3 participants recognized fragmented objects embedded in nonsense fragments. Around 8 seconds prior to explicit recognition, participants began to fixate the object region rather than a similar control region in the stimulus pictures. Before participants’ indicated awareness of the object, they fixated it with an average of 9 consecutive fixations. Hence, participants were looking at the object as if they had recognized it before they became aware of its identity. Furthermore, prior object information affected eye movement sampling of the stimulus, suggesting that semantic memory was involved in guiding the eyes during object recognition even before the participants were aware of its presence. Collectively, the studies support the view that gaze control is instrumental to visual recognition performance and that visual recognition is an interactive process between memory representation and information sampling.

Ort, förlag, år, upplaga, sidor
Umeå: Psykologi, 2007. s. 58
Serie
Umeå studies in cognitive science, ISSN 1654-2568 ; 2
Nyckelord
declarative memory, face perception, object recognition, scene recognition, eye movements, visual awareness, recollection, familiarity
Nationell ämneskategori
Psykologi
Identifikatorer
urn:nbn:se:umu:diva-1179 (URN)978-91-7264-347-5 (ISBN)
Disputation
2007-09-14, NBVH 1031, Norra Beteendevetarhuset, Umeå Universitet, S-901 87, Umeå, 10:15 (Engelska)
Opponent
Handledare
Tillgänglig från: 2007-06-12 Skapad: 2007-06-12 Senast uppdaterad: 2018-06-09Bibliografiskt granskad

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Holm, LinusEriksson, JohanAndersson, Linus

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