Long Term Memory for Noise: Evidence of Robust Encoding of Very Short Temporal Acoustic Patterns
| Autor: | Nadège Bacon-Macé, Florence Rémy, Jayalakshmi Viswanathan, Simon J. Thorpe |
|---|---|
| Přispěvatelé: | Centre de recherche cerveau et cognition (CERCO), Institut des sciences du cerveau de Toulouse. (ISCT), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Echoic memory Speech recognition lcsh:RC321-571 STDP Scrambling 03 medical and health sciences long-term memory 0302 clinical medicine Robustness (computer science) Encoding (memory) lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry Original Research Recognition memory Long-term memory [SCCO.NEUR]Cognitive science/Neuroscience General Neuroscience Implicit learning Noise 030104 developmental biology meaningless stimuli Psychology implicit learning temporal resolution 030217 neurology & neurosurgery Neuroscience |
| Zdroj: | Frontiers in Neuroscience Frontiers in Neuroscience, Frontiers, 2016, 10, ⟨10.3389/fnins.2016.00490⟩ Frontiers in Neuroscience, Vol 10 (2016) |
| ISSN: | 1662-453X 1662-4548 |
| DOI: | 10.3389/fnins.2016.00490 |
| Popis: | Recent research has demonstrated that humans are able to implicitly encode and retain repeating patterns in meaningless auditory noise. Our study aimed at testing the robustness of long-term implicit recognition memory for these learned patterns. Participants performed a cyclic/non-cyclic discrimination task, during which they were presented with either 1-s cyclic noises (CNs) (the two halves of the noise were identical) or 1-s plain random noises (Ns). Among CNs and Ns presented once, target CNs were implicitly presented multiple times within a block, and implicit recognition of these target CNs was tested 4 weeks later using a similar cyclic/non-cyclic discrimination task. Furthermore, robustness of implicit recognition memory was tested by presenting participants with looped (shifting the origin) and scrambled (chopping sounds into 10− and 20-ms bits before shuffling) versions of the target CNs. We found that participants had robust implicit recognition memory for learned noise patterns after 4 weeks, right from the first presentation. Additionally, this memory was remarkably resistant to acoustic transformations, such as looping and scrambling of the sounds. Finally, implicit recognition of sounds was dependent on participant's discrimination performance during learning. Our findings suggest that meaningless temporal features as short as 10 ms can be implicitly stored in long-term auditory memory. Moreover, successful encoding and storage of such fine features may vary between participants, possibly depending on individual attention and auditory discrimination abilities. Significance Statement Meaningless auditory patterns could be implicitly encoded and stored in long-term memory. Acoustic transformations of learned meaningless patterns could be implicitly recognized after 4 weeks. Implicit long-term memories can be formed for meaningless auditory features as short as 10 ms. Successful encoding and long-term implicit recognition of meaningless patterns may strongly depend on individual attention and auditory discrimination abilities. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|