Visual field effects and short-term memory for verbal material

Hannay, H. Julia; Malone, Daniel R.

doi:10.1016/0028-3932(76)90049-x

Cited by 107 publications

(15 citation statements)

References 16 publications

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“…This is consistent with previous experiments (Berrini et al, 1982;Hannay & Malone, 1976;Hines et al, 1973), including a recent study using the same stimuli and lag structure (Federmeier & Benjamin, 2005). Despite the pervasiveness of this effect, accuracy advantages for RVF/LH stimuli may not reflect superior memory per se.…”

Section: Discussionsupporting

confidence: 90%

“…The question of how encoding biases interact with time has not been extensively examined. Most VF studies of verbal memory have used fairly short retention intervals or lags (number of intervening stimuli between study and test), and these have reported ubiquitous RVF/LH advantages for both the accuracy and speed of responses (Berrini et al, 1982;Blanchet et al, 2001;Hannay & Malone, 1976). The few studies that have looked at retention across a wider range of repetition intervals have found that asymmetries do change, with some finding evidence that the LH's accuracy and speed advantages become more pronounced as the retention interval increases (Coney & McDonald, 1988;Hines, Satz, Schell, & Schmidlin, 1969).…”

Section: Introductionmentioning

confidence: 99%

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The memory that's right and the memory that's left: Event-related potentials reveal hemispheric asymmetries in the encoding and retention of verbal information

2007

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We examined the nature and timecourse of hemispheric asymmetries in verbal memory by recording event-related potentials (ERPs) in a continuous recognition task. Participants made overt recognition judgments to test words presented in central vision that were either novel (new words) or had been previously presented in the left or right visual field (old words). An ERP memory effect linked to explicit retrieval revealed no asymmetries for words repeated at short and medium retention intervals, but at longer repetition lags (20-50 intervening words) this 'old/new effect' was more pronounced for words whose study presentation had been biased to the right hemisphere (RH). Additionally, a repetition effect linked to more implicit recognition processes (P2 amplitude changes) was observed at all lags for words preferentially encoded by the RH but was not observed for left hemisphere (LH)-encoded words. These results are consistent with theories that the RH encodes verbal stimuli more veridically whereas the LH encodes in a more abstract manner. The current findings provide a critical link between prior work on memory asymmetries, which has emphasized general LH advantages for verbal material, and on language comprehension, which has pointed to an important role for the RH in language processes that require the retention and integration of verbal information over long time spans.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

The memory that's right and the memory that's left: Event-related potentials reveal hemispheric asymmetries in the encoding and retention of verbal information

2007

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“…Considering identification studies that presented stimulus items to only one visual field on any given trial, verbal items are correctly identified more often when they are projected to the left than when they are projected to the right hemisphere. These verbal stimulus materials have included single letters (Bryden, 1965(Bryden, , 1966Bryden & Rainey, 1963;Hines, Satz, & Clementino, 1973;Kimura, 1966;McKeever & Gill, 1972b;WorraI & Coles, 1976), letter strings (Cohen, 1976;Fontenot, 1973;Fontenot & Benton, 1972;Hannay & Malone, 1976;Hilliard, 1973;Neil, Sampson, & Gribben, 1971;White, 1969White, , 1971, and words (Forgays, 1953;Mishkin & Forgays, 1952;McKeever & Huling, 1970;Orbach, 1953). Similar findings have been obtained when reaction time (RT) is used to measure hemispheric differences for speed of stimulus identification.…”

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confidence: 76%

Hemispheric differences in stimulus identification

Polich

1978

Perception & Psychophysics

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Subjects were presented with either verbal (letters) or nonverbal (outline forms) stimuli to their left or right cerebral hemispheres. Verbal items presented with a lateral masking stimulus were identified more quickly and accurately when presented to the right hemisphere rather than to the left. When the letters were presented without a masking stimulus, weak hemispheric effects were obtained. Nonverbal forms demonstrated faster reaction time and fewer errors for right-hemisphere presentations under both masked and unmasked conditions. Retinal locus of the display item was also varied and produced faster responding with fewer errors when the stimulus was presented foveally rather than peripherally under all display conditions. These effects were attributed to the use of a manual response procedure that effectively reduced the ability of subjects to employ names for the stimulus objects.The usual paradigm for measuring hemispheric processing effects on the accuracy of stimulus identification consists of tachistoscopically presenting items in either the right or left visual field. If the subject is fixating on a central point and the stimulus is presented at an exposure duration of less than 250 msec, the item is projected to the hemisphere contralateral to the visual field in which it appears. The subject is then required to indicate, either verbally or by pointing to the test item from an array of possible items, what he saw. Considering identification studies that presented stimulus items to only one visual field on any given trial, verbal items are correctly identified more often when they are projected to the left than when they are projected to the right hemisphere. These verbal stimulus materials have included single letters (Bryden, 1965(Bryden, , 1966

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“…Recent studies employing non-brain-damaged, adult populations provide confirming evidence, not only of greater functional asymmetry [5,6,14] …”

mentioning

confidence: 88%