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abstract: 'We discuss paradigmatic properties of activity of single cells comprising an attractor -- a developed stable delay activity distribution. To demonstrate these properties and a methodology for measuring their values, we present a detailed account of the spike activity recorded from one single cell in infero-temporal (IT) cortex of a monkey performing a delayed match-to-sample (DMS) task of visual images. In particular, we discuss and exemplify: 1. the relation between spontaneous activity and activity immediately preceding the first stimulus in each trial during a series of DMS trials; 2. the effect on the visual response (i.e. activity {\bf during} stimulation) of stimulus degradation (moving in the space of IT afferents); 3. the behaviour of the delay activity (i.e. activity {\bf following} visual stimulation) under stimulus degradation (attractor dynamics, and the basin of attraction); and, 4. the propagation of information between trials -- the vehicle for the formation of (contextual) correlations by learning a fixed stimulus sequence, as found in Miyashita 1988. In the process of the discussion and demonstration, we expose effective tools for the identification and characterisation of attractor dynamics.'
altloc:
  - http://www.fiz.huji.ac.il/staff/acc/faculty/damita/papers.html
chapter: ~
commentary: ~
commref: ~
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conference: ~
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contact_email: ~
creators_id: []
creators_name:
  - family: Amit
    given: Daniel J.
    honourific: ''
    lineage: ''
  - family: Fusi
    given: Stefano
    honourific: ''
    lineage: ''
  - family: Yakovlev
    given: Volodya
    honourific: ''
    lineage: ''
date: 1997
date_type: published
datestamp: 1998-08-27
department: ~
dir: disk0/00/00/00/63
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editors_id: []
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eprint_status: archive
eprintid: 63
fileinfo: /style/images/fileicons/application_postscript.png;/63/2/parmn.ps
full_text_status: public
importid: ~
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isbn: ~
ispublished: pub
issn: ~
item_issues_comment: []
item_issues_count: 0
item_issues_description: []
item_issues_id: []
item_issues_reported_by: []
item_issues_resolved_by: []
item_issues_status: []
item_issues_timestamp: []
item_issues_type: []
keywords: 'IT cortex, delay activity, attractors, single-unit recording, delay-match-to-sample task, spike-rate correlations, neural network, modeling,'
lastmod: 2011-03-11 08:53:39
latitude: ~
longitude: ~
metadata_visibility: show
note: ~
number: ~
pagerange: 1101
pubdom: FALSE
publication: Neural Computation
publisher: ~
refereed: TRUE
referencetext: ~
relation_type: []
relation_uri: []
reportno: ~
rev_number: 10
series: ~
source: ~
status_changed: 2007-09-12 16:22:39
subjects:
  - behav-neuro-sci
  - comp-neuro-sci
  - neuro-mod
  - neuro-physio
succeeds: ~
suggestions: ~
sword_depositor: ~
sword_slug: ~
thesistype: ~
title: A paradigmatic working memory (attractor) cell in it cortex
type: journalp
userid: 235
volume: 9
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