Distinct Effects of Memory Retrieval and Articulatory Preparation when Learning and Accessing New Word Forms
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{"title"=>"Distinct effects of memory retrieval and articulatory preparation when learning and accessing new word forms", "type"=>"journal", "authors"=>[{"first_name"=>"Anni", "last_name"=>"Nora", "scopus_author_id"=>"55345943600"}, {"first_name"=>"Hanna", "last_name"=>"Renvall", "scopus_author_id"=>"6603460106"}, {"first_name"=>"Jeong Young", "last_name"=>"Kim", "scopus_author_id"=>"55346730700"}, {"first_name"=>"Elisabet", "last_name"=>"Service", "scopus_author_id"=>"7003767726"}, {"first_name"=>"Riitta", "last_name"=>"Salmelin", "scopus_author_id"=>"55075941500"}], "year"=>2015, "source"=>"PLoS ONE", "identifiers"=>{"doi"=>"10.1371/journal.pone.0126652", "sgr"=>"84930641213", "issn"=>"19326203", "pui"=>"604612103", "isbn"=>"1932-6203", "scopus"=>"2-s2.0-84930641213"}, "id"=>"306c415c-2fd0-3564-b4b0-1a9340d65268", "abstract"=>"Temporal and frontal activations have been implicated in learning of novel word forms, but their specific roles remain poorly understood. The present magnetoencephalography (MEG) study examines the roles of these areas in processing newly-established word form representations. The cortical effects related to acquiring new phonological word forms during incidental learning were localized. Participants listened to and repeated back new word form stimuli that adhered to native phonology (Finnish pseudowords) or were foreign (Korean words), with a subset of the stimuli recurring four times. Subsequently, a modified 1-back task and a recognition task addressed whether the activations modulated by learning were related to planning for overt articulation, while parametrically added noise probed reliance on developing memory representations during effortful perception. Learning resulted in decreased left superior temporal and increased bilateral frontal premotor activation for familiar compared to new items. The left temporal learning effect persisted in all tasks and was strongest when stimuli were embedded in intermediate noise. In the noisy conditions, native phonotactics evoked overall enhanced left temporal activation. In contrast, the frontal learning effects were present only in conditions requiring overt repetition and were more pronounced for the foreign language. The results indicate a functional dissociation between temporal and frontal activations in learning new phonological word forms: the left superior temporal responses reflect activation of newlyestablished word-form representations, also during degraded sensory input, whereas the frontal premotor effects are related to planning for articulation and are not preserved in noise.", "link"=>"http://www.mendeley.com/research/distinct-effects-memory-retrieval-articulatory-preparation-learning-accessing-new-word-forms", "reader_count"=>17, "reader_count_by_academic_status"=>{"Researcher"=>3, "Student > Ph. D. Student"=>4, "Student > Postgraduate"=>2, "Student > Master"=>1, "Student > Bachelor"=>2, "Professor"=>3, "Unspecified"=>2}, "reader_count_by_user_role"=>{"Researcher"=>3, "Student > Ph. D. Student"=>4, "Student > Postgraduate"=>2, "Student > Master"=>1, "Student > Bachelor"=>2, "Professor"=>3, "Unspecified"=>2}, "reader_count_by_subject_area"=>{"Unspecified"=>3, "Biochemistry, Genetics and Molecular Biology"=>1, "Agricultural and Biological Sciences"=>2, "Medicine and Dentistry"=>1, "Neuroscience"=>6, "Psychology"=>3, "Computer Science"=>1}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>1}, "Neuroscience"=>{"Neuroscience"=>6}, "Psychology"=>{"Psychology"=>3}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>2}, "Computer Science"=>{"Computer Science"=>1}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>1}, "Unspecified"=>{"Unspecified"=>3}}, "reader_count_by_country"=>{"France"=>1}, "group_count"=>4}

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/2061198"], "description"=>"<p>The initial learning phase with overt repetition was followed by two experimental manipulations, through noise and task. <i>The noise manipulation</i> included overt repetition of familiar and new word forms in two levels of noise. <i>The task manipulation</i> consisted of a 1-back control task and a recognition task that were performed on familiar and new word form stimuli. Stimulus presentation and response timing in the different experimental conditions is illustrated below.</p>", "links"=>[], "tags"=>["Distinct Effects", "premotor activation", "Articulatory Preparation", "memory representations", "novel word forms", "premotor effects", "Accessing New Word Forms Temporal", "word form stimuli", "memory retrieval", "phonological word forms", "recognition task", "meg", "Finnish pseudowords"], "article_id"=>1409728, "categories"=>["Uncategorised"], "users"=>["Anni Nora", "Hanna Renvall", "Jeong-Young Kim", "Elisabet Service", "Riitta Salmelin"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0126652.g001", "stats"=>{"downloads"=>0, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Experimental_design_/1409728", "title"=>"Experimental design.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-05-11 02:45:11"}
  • {"files"=>["https://ndownloader.figshare.com/files/2061201"], "description"=>"<p>(A) Proportion of correctly repeated familiar and new foreign and native word forms (mean ± standard error of mean) in different levels of noise (signal-to-noise ratio = SNR +70 dB / +10 dB / 0 dB). * refers to p < 0.05. (B) Proportion of correctly recognized familiar foreign and native word forms (hits; mean ± standard error of mean).</p>", "links"=>[], "tags"=>["Distinct Effects", "premotor activation", "Articulatory Preparation", "memory representations", "novel word forms", "premotor effects", "Accessing New Word Forms Temporal", "word form stimuli", "memory retrieval", "phonological word forms", "recognition task", "meg", "Finnish pseudowords"], "article_id"=>1409731, "categories"=>["Uncategorised"], "users"=>["Anni Nora", "Hanna Renvall", "Jeong-Young Kim", "Elisabet Service", "Riitta Salmelin"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0126652.g002", "stats"=>{"downloads"=>0, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Behavioral_effects_/1409731", "title"=>"Behavioral effects.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-05-11 02:45:11"}
  • {"files"=>["https://ndownloader.figshare.com/files/2061221"], "description"=>"<p>Summary of the mean activation strengths for native and foreign language during each of the tasks (<i>left</i>; repetition in the learning phase, 1-back control task, recognition) and noise levels (<i>right</i>; SNR +70 dB (no noise), +10 dB, 0 dB) in the left temporal and bilateral frontal sources. The time windows are the ones that showed learning effects during the initial learning phase. Statistically significant main effects of stimulus familiarity across experimental conditions (tasks / noise levels) and languages in the ANOVAs are denoted as text beside each plot (“new fam”, p < 0.05). Asterisks (*) below the text denote statistically significant interactions of stimulus familiarity and task / noise level.</p>", "links"=>[], "tags"=>["Distinct Effects", "premotor activation", "Articulatory Preparation", "memory representations", "novel word forms", "premotor effects", "Accessing New Word Forms Temporal", "word form stimuli", "memory retrieval", "phonological word forms", "recognition task", "meg", "Finnish pseudowords"], "article_id"=>1409749, "categories"=>["Uncategorised"], "users"=>["Anni Nora", "Hanna Renvall", "Jeong-Young Kim", "Elisabet Service", "Riitta Salmelin"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0126652.g005", "stats"=>{"downloads"=>0, "page_views"=>10, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Group_level_experimental_effects_during_the_post_learning_manipulations_/1409749", "title"=>"Group-level experimental effects during the post-learning manipulations.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-05-11 02:45:11"}
  • {"files"=>["https://ndownloader.figshare.com/files/2061223"], "description"=>"<p>Scatterplots of percent change of the left temporal activation from the 1<sup>st</sup> to the 4<sup>th</sup> repetition during learning as a function of percent difference in repetition accuracy between new and familiar word forms at SNR +10 dB (<i>left</i>) and as a function of recognition measure d’ (<i>right</i>).</p>", "links"=>[], "tags"=>["Distinct Effects", "premotor activation", "Articulatory Preparation", "memory representations", "novel word forms", "premotor effects", "Accessing New Word Forms Temporal", "word form stimuli", "memory retrieval", "phonological word forms", "recognition task", "meg", "Finnish pseudowords"], "article_id"=>1409751, "categories"=>["Uncategorised"], "users"=>["Anni Nora", "Hanna Renvall", "Jeong-Young Kim", "Elisabet Service", "Riitta Salmelin"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0126652.g006", "stats"=>{"downloads"=>0, "page_views"=>9, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Significant_correlations_of_neural_effects_and_behavioral_measures_/1409751", "title"=>"Significant correlations of neural effects and behavioral measures.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-05-11 02:45:11"}
  • {"files"=>["https://ndownloader.figshare.com/files/2061206"], "description"=>"<p>(A) MEG sensor-level data. First (‘new’) and fourth (‘familiar’) presentation of the novel word forms in the learning phase, averaged over twelve participants and over languages. Stimulus effects are illustrated at two recording sites over the left hemisphere (sites 1, 2) and two (symmetrical) sites over the right hemisphere (sites 3, 4), with each site containing two planar gradiometers that are sensitive to orthogonal orientations of neural currents (cf. small schematic heads). Planar gradiometers detect the strongest signal directly above an active cortical area. (B) Source localization using minimum norm estimates (MNEs). The distribution of activation advancing from 100 to 1200 ms after stimulus onset (time slots of 100 or 300 ms), represented as an average over twelve participants. Salient activation maxima are evident in the bilateral temporal and left frontal cortices, but spatially close sources merge into a single blob, even when they have different underlying orientations of current flow.</p>", "links"=>[], "tags"=>["Distinct Effects", "premotor activation", "Articulatory Preparation", "memory representations", "novel word forms", "premotor effects", "Accessing New Word Forms Temporal", "word form stimuli", "memory retrieval", "phonological word forms", "recognition task", "meg", "Finnish pseudowords"], "article_id"=>1409736, "categories"=>["Uncategorised"], "users"=>["Anni Nora", "Hanna Renvall", "Jeong-Young Kim", "Elisabet Service", "Riitta Salmelin"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0126652.g003", "stats"=>{"downloads"=>1, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Sensor_signals_and_source_level_overview_/1409736", "title"=>"Sensor signals and source-level overview.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-05-11 02:45:11"}
  • {"files"=>["https://ndownloader.figshare.com/files/2061214"], "description"=>"<p><i>Left</i>: Equivalent Current Dipole (ECD) clusters displayed on a sagittal plane of a standard brain. Each dot represents the center of an active cortical patch and the line attached to it the mean direction of current flow in that area, in one participant (LT = left temporal, RT = right temporal, LF = left frontal, RF = right frontal). <i>Center</i>: Grand average source waveforms for each ECD cluster, for new and familiar word forms in the native and foreign language. The arrows indicate the time windows that showed statistically significant effects (indexed by numbers 1 through 4). <i>Right</i>: Summary of the significant main effects and interactions of the mean activation strengths (cf. indices on the source time courses). Error bars indicate the standard error of mean. Asterisks denote statistically significant effects in paired comparisons of familiar and new word forms (* p < 0.05, ** p < 0.01).</p>", "links"=>[], "tags"=>["Distinct Effects", "premotor activation", "Articulatory Preparation", "memory representations", "novel word forms", "premotor effects", "Accessing New Word Forms Temporal", "word form stimuli", "memory retrieval", "phonological word forms", "recognition task", "meg", "Finnish pseudowords"], "article_id"=>1409742, "categories"=>["Uncategorised"], "users"=>["Anni Nora", "Hanna Renvall", "Jeong-Young Kim", "Elisabet Service", "Riitta Salmelin"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0126652.g004", "stats"=>{"downloads"=>1, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Group_level_experimental_effects_in_the_learning_phase_/1409742", "title"=>"Group-level experimental effects in the learning phase.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-05-11 02:45:11"}

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Relative Metric

{"start_date"=>"2015-01-01T00:00:00Z", "end_date"=>"2015-12-31T00:00:00Z", "subject_areas"=>[]}
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