scholarly journals Acquisition of skilled finger movements is accompanied by reorganization of the corticospinal system

2018 ◽  
Vol 119 (2) ◽  
pp. 573-584 ◽  
Author(s):  
Masato Hirano ◽  
Shinji Kubota ◽  
Shinichi Furuya ◽  
Yoshiki Koizume ◽  
Shinya Tanaka ◽  
...  
Keyword(s):  
Implicit Learning ◽  
Sequence Learning ◽  
Explicit Learning ◽  
Voluntary Movements ◽  
Finger Movements ◽  
Corticospinal System ◽  
Learning Conditions ◽  
Implicit And Explicit ◽  
Implicit And Explicit Learning ◽  
Coordination Patterns

Dexterous finger movements are often characterized by highly coordinated movements. Such coordination might be derived from reorganization of the corticospinal system. In this study, we investigated 1) the manner in which finger movement covariation patterns are acquired, by examining the effects of the implicit and explicit learning of a serial reaction time task (SRTT), and 2) how such changes in finger coordination are represented in the corticospinal system. The subjects learned a button press sequence in both implicit and explicit learning conditions. In the implicit conditions, they were naive about what they were learning, whereas in the explicit conditions the subjects consciously learned the order of the sequence elements. Principal component analysis decomposed both the voluntary movements produced during the SRTT and the passive movements evoked by transcranial magnetic stimulation (TMS) over the primary motor cortex into a set of five finger joint covariation patterns. The structures of the voluntary and passive TMS-evoked movement patterns were reorganized by implicit learning but not explicit learning. Furthermore, in the implicit learning conditions the finger covariation patterns derived from the TMS-evoked and voluntary movements spanned similar movement subspaces. These results provide the first evidence that skilled sequential finger movements are acquired differently through implicit and explicit learning, i.e., the changes in finger coordination patterns induced by implicit learning are accompanied by functional reorganization of the corticospinal system, whereas explicit learning results in faster recruitment of individual finger movements without causing any changes in finger coordination. NEW & NOTEWORTHY Skilled sequential multifinger movements are characterized as highly coordinated movement patterns. These finger coordination patterns are represented in the corticospinal system, yet it still remains unclear how these patterns are acquired through implicit and explicit motor sequence learning. A direct comparison of learning-related changes between actively generated finger movements and passively evoked finger movements by TMS provided evidence that finger coordination patterns represented in the corticospinal system are reorganized through implicit, but not explicit, sequence learning.

Implicit sequence learning in a search task

2008 ◽  
Vol 61 (11) ◽  
pp. 1650-1657 ◽  
Author(s):  
Luis Jiménez ◽  
Gustavo A. Vázquez
Keyword(s):  
Sequence Learning ◽  
Search Task ◽  
Explicit Learning ◽  
Implicit Sequence Learning ◽  
Generation Task ◽  
Central Location ◽  
Indirect Measures ◽  
Implicit And Explicit ◽  
Implicit And Explicit Learning ◽  
Central Condition

This study investigated the effects of selection demands on implicit sequence learning. Participants in a search condition looked for a target among seven distractors and responded on the target identity. The responses followed a deterministic sequence, and sequence learning was compared to that found in two control conditions in which the targets were presented alone, either at a central location or over a series of unpredictable locations. Sequence learning was obtained in all conditions, and it was equivalent for the two variable location conditions, regardless of the perceptual demands. Larger effects of learning were observed in the central location, both on the indirect measures and on the measures taken from a cued-generation task. The expression of learning decreased selectively in this condition when the sequence validity was reduced over a test block. These results are consistent with the claims that implicit and explicit learning are mixed in this central condition and that implicit learning is not affected by selection difficulty.

Implicit versus explicit: An act-r learning perspective

1999 ◽  
Vol 22 (5) ◽  
pp. 785-786 ◽  
Author(s):  
Niels A. Taatgen
Keyword(s):  
Implicit Learning ◽  
Explicit Memory ◽  
Explicit Knowledge ◽  
Cognitive Architecture ◽  
Explicit Learning ◽  
Implicit And Explicit Memory ◽  
The Difference ◽  
Implicit And Explicit ◽  
Implicit And Explicit Learning

Dienes & Perner propose a theory of implicit and explicit knowledge that is not entirely complete. It does not address many of the empirical issues, nor does it explain the difference between implicit and explicit learning. It does, however, provide a possible unified explanation, as opposed to the more binary theories like the systems and the processing theories of implicit and explicit memory. Furthermore, it is consistent with a theory in which implicit learning is viewed as based on the mechanisms of the cognitive architecture, and explicit learning as strategies that exploit these mechanisms.

Implicit and explicit learning in a hybrid architecture of cognition

1999 ◽  
Vol 22 (5) ◽  
pp. 772-773
Author(s):  
Christian Lebiere ◽  
Dieter Wallach
Keyword(s):  
Implicit Learning ◽  
Conceptual Analysis ◽  
Human Cognition ◽  
Explicit Learning ◽  
Hybrid Architecture ◽  
Integrated Architecture ◽  
The Common ◽  
Implicit And Explicit ◽  
Implicit And Explicit Learning ◽  
Analysis Of Knowledge

We present a theoretical account of implicit and explicit learning in terms of act-r, an integrated architecture of human cognition as a computational supplement to Dienes & Perner's conceptual analysis of knowledge. Explicit learning is explained in act-r by the acquisition of new symbolic knowledge, whereas implicit learning amounts to statistically adjusting subsymbolic quantities associated with that knowledge. We discuss the common foundation of a set of models that are able to explain data gathered in several signature paradigms of implicit learning.

Complementary Category Learning Systems Identified Using Event-Related Functional MRI

2000 ◽  
Vol 12 (6) ◽  
pp. 977-987 ◽  
Author(s):  
Howard J. Aizenstein ◽  
Angus W. MacDonald ◽  
V. Andrew Stenger ◽  
Robert D. Nebes ◽  
Jeris K. Larson ◽  
...  
Keyword(s):  
Implicit Learning ◽  
Category Learning ◽  
Medial Temporal Lobe ◽  
Learning Task ◽  
Neural Systems ◽  
Explicit Learning ◽  
Imaging Data ◽  
Activation Patterns ◽  
Implicit And Explicit ◽  
Implicit And Explicit Learning

Event-related fMRI was used to dissociate the neural systems involved in category learning with and without awareness. Ten subjects performed a speeded response category learning task. Functional MR images were acquired during both explicit and implicit learning conditions. Behavioral data showed evidence of learning in both conditions. Functional imaging data showed different activation patterns in implicit and explicit trials. Decreased activation in extrastriate region V3 was found with implicit learning, and increased activation in V3, the medial temporal lobe, and frontal regions were found with explicit learning. These results support the theory that implicit and explicit learning utilize dissociable neural systems. Moreover, in both the implicit and explicit conditions a similar pattern of decreased activation was found in parietal regions. This commonality suggests that these dissociable systems also operate in parallel.

Implicit and explicit learning in schizophrenics treated with olanzapine and with classic neuroleptics

2002 ◽  
Vol 160 (3) ◽  
pp. 299-306 ◽  
Author(s):  
Andreas Stevens ◽  
Jürgen Schwarz ◽  
Benedikt Schwarz ◽  
Ilona Ruf ◽  
Thomas Kolter ◽  
...  
Keyword(s):  
Explicit Learning ◽  
Implicit And Explicit ◽  
Implicit And Explicit Learning

scholarly journals Assumptions of the Process-Dissociation Procedure are Violated in Implicit Sequence Learning

2016 ◽  
Author(s):  
Marius Barth ◽  
Christoph Stahl ◽  
Hilde Haider
Keyword(s):  
Sequence Learning ◽  
Explicit Knowledge ◽  
Implicit Knowledge ◽  
Process Dissociation ◽  
Implicit Sequence Learning ◽  
Generation Task ◽  
Accurate Performance ◽  
Exclusion Condition ◽  
Implicit And Explicit ◽  
Implicit And Explicit Learning

In implicit sequence learning, a process-dissociation (PD) approach has been proposed to dissociate implicit and explicit learning processes. Applied to the popular generation task, participants perform two different task versions: inclusion instructions require generating the transitions that form the learned sequence; exclusion instructions require generating transitions other than those of the learned sequence. Whereas accurate performance under inclusion may be based on either implicit or explicit knowledge, avoiding to generate learned transitions requires controllable explicit sequence knowledge. The PD approach yields separate estimates of explicit and implicit knowledge that are derived from the same task; it therefore avoids many problems of previous measurement approaches. However, the PD approach rests on the critical assumption that the implicit and explicit processes are invariant across inclusion and exclusion conditions. We tested whether the invariance assumptions hold for the PD generation task. Across three studies using first-order as well as second-order regularities, invariance of the controlled process was found to be violated. In particular, despite extensive amounts of practice, explicit knowledge was not exhaustively expressed in the exclusion condition. We discuss the implications of these findings for the use of process-dissociation in assessing implicit knowledge.

scholarly journals Are you mentoring or coaching? Definitions matter

2020 ◽  
pp. 096100062096665
Author(s):  
Lisa Hussey ◽  
Jennifer Campbell-Meier
Keyword(s):  
Best Practice ◽  
Information Science ◽  
Research Question ◽  
The United States ◽  
Library And Information Science ◽  
Explicit Learning ◽  
Structured Interviews ◽  
Apply Theory ◽  
Implicit And Explicit ◽  
Implicit And Explicit Learning

New library and information science professionals, without previous experience in information organizations, are often left adrift, unsure how to apply theory or best practice to a new work environment. To bridge this gap, mentoring and coaching opportunities are often employed (or mandated) to provide new practitioners with required skills, knowledge, or networking. There are opportunities to harness implicit and explicit learning through experiences and interactions through mentoring and coaching. Definitions of mentoring and coaching in the profession are often used interchangeably when discussing the growth and development of an individual. This leads to the following questions: How do librarians define both mentoring and coaching? How do mentoring and coaching relate to professional development? To address the research question, 47 semi-structured interviews were conducted with librarians in Canada, New Zealand, and the United States between 2015 and 2016. Participants were asked about their mentoring and coaching experiences. During the interviews, participants were asked questions about their experiences as a mentor or mentee. In addition, participants were asked to define both “mentoring” and “coaching.” The authors used an inductive approach to data analysis, and interviews were coded by category.

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