The role of feedback in learning a vernier discrimination task

Herzog, Michael H.; Fahle, Manfred

doi:10.1016/s0042-6989(97)00043-6

Cited by 227 publications

(252 citation statements)

References 11 publications

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“…Six of the 9 observers in the present study showed reliable 2 decreases in detection thresholds across the course of the experiment, consistent with the range of individual differences typically observed in perceptual learning studies (Fine & Jacobs, 2002;Herzog & Fahle, 1997). Figure 2A plots the change in relative threshold (estimated threshold for each session divided by the initial threshold) for these 6 observers.…”

Section: Standard Measures Of Perceptual Learningsupporting

confidence: 82%

Perceptual learning in contrast detection: presence and cost of shifts in response criteria

Wenger

Rasche

2006

Psychonomic Bulletin & Review

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Contemporary theoretical accounts of perceptual learning typically assume that observers are either unbiased or stably biased across the course of learning. However, standard methods for estimating thresholds, as they are typically used, do not allow this assumption to be tested. We present an approach that allows for this test specific to perceptual learning for contrast detection. We show that reliable decreases in detection thresholds and increases in hit rates are not uniformly accompanied by reliable increases in sensitivity (d ), but are regularly accompanied by reliable liberal shifts in response criteria (c). In addition, we estimate the extent to which sensitivity could have increased in the absence of these liberal shifts. The results pose a challenge to the assumption that perceptual learning has limited or no impact on response criteria.

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Section: Standard Measures Of Perceptual Learningsupporting

confidence: 82%

Perceptual learning in contrast detection: presence and cost of shifts in response criteria

Wenger

Rasche

2006

Psychonomic Bulletin & Review

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“…Specifically, this theory asserts that with extended perceptual learning, there is a top-down cascade of information processing that tunes neural responses at earlier levels of visual processing (Ahissar and Hochstein, 2004;Ahissar et al, 2009). For example, training results in a feedback process that enhances the capacity of individuals to make Vernier discriminations (Fahle, 2009;Herzog and Fahle, 1997). Whilst these ideas on visual processing and expertise with perceptual learning in the primate brain have not yet been applied to our understanding of how invertebrates may process their visual environment, it is plausible that the honeybee brain can use topdown information to assist in making complex spatial discriminations.…”

Section: Discussionmentioning

confidence: 99%

Seeing near and seeing far; behavioural evidence for dual mechanisms of pattern vision in the honeybee (Apis mellifera)

Dyer

Griffiths

2012

Journal of Experimental Biology

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SUMMARYVisual perception is a primary modality for interacting with complex environments. Recent work has shown that the brain and visual system of the honeybee is able, in some cases, to learn complex spatial relationships, while in other cases, bee vision is relatively rudimentary and based upon simple elemental-type visual processing. In the present study, we test the ability of honeybees to learn 4-bar asymmetric patterns in a Y-maze with aversive-appetitive differential conditioning. In Experiment 1, a group of bees were trained at a small visual angle of 50deg by constraining individuals to the decision chamber within the Ymaze. Bees learned this task, and were able to solve the task even in the presence of background noise. However, these bees failed to solve the task when the stimuli were presented at a novel visual angle of 100deg. In Experiment 2, a separate group of bees were trained to sets of 4-bar asymmetric patterns that excluded retinotopic matching and, in this case, bees learned the configural rule describing stimuli at a visual angle of approximately 50deg, and this allowed the bees to solve the task when the stimuli were presented at a novel vision angle of 100deg. This shows that the bee brain contains multiple mechanisms for pattern recognition, and what a bee sees is very dependent upon the specific experience that it receives. These multiple mechanisms would allow bees to interact with complex environments to solve tasks like recognising landmarks at variable distances or quickly discriminating between rewarding/non-rewarding flowers at reasonable constant visual angles. Supplementary material available online at

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“…To optimize learning during EEG recordings, participants received minimal practice prior to the onset of the experiment and were given performance feedback on each trial (Herzog and Fahle 1997;Shiu and Pashler 1992). Participants were presented with four different tasks randomized across eight blocks, with two blocks per task (Fig.…”

Section: Methodsmentioning

confidence: 99%

Practice-Related Improvement in Working Memory is Modulated by Changes in Processing External Interference

Berry

Zanto²,

Rutman³

et al. 2009

Journal of Neurophysiology

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Berry AS, Zanto TP, Rutman AM, Clapp WC, Gazzaley A. Practicerelated improvement in working memory is modulated by changes in processing external interference. J Neurophysiol 102: 1779 -1789. First published July 8, 2009 doi:10.1152/jn.00179.2009. Working memory (WM) performance is impaired by the presence of external interference. Accordingly, more efficient processing of intervening stimuli with practice may lead to enhanced WM performance. To explore the role of practice on the impact that interference has on WM performance, we studied young adults with electroencephalographic (EEG) recordings as they performed three motion-direction, delayed-recognition tasks. One task was presented without interference, whereas two tasks introduced different types of interference during the interval of memory maintenance: distractors and interruptors. Distractors were to be ignored, whereas interruptors demanded attention based on task instructions for a perceptual discrimination. We show that WM performance was disrupted by both types of interference, but interference-induced disruption abated across a single experimental session through rapid learning. WM accuracy and response time improved in a manner that was correlated with changes in early neural measures of interference processing in visual cortex (i.e., P1 suppression and N1 enhancement). These results suggest practice-related changes in processing interference exert a positive influence on WM performance, highlighting the importance of filtering irrelevant information and the dynamic interactions that exist between neural processes of perception, attention, and WM during learning.

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The role of feedback in learning a vernier discrimination task

Cited by 227 publications

References 11 publications

Perceptual learning in contrast detection: presence and cost of shifts in response criteria

Perceptual learning in contrast detection: presence and cost of shifts in response criteria

Seeing near and seeing far; behavioural evidence for dual mechanisms of pattern vision in the honeybee (Apis mellifera)

Practice-Related Improvement in Working Memory is Modulated by Changes in Processing External Interference

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