Processing of conflicting and redundant stimulus information by pigeons

In this paper we apply the two methods described in the companion paper (4) to experimentally recorded spike trains from two preparations, the crayfish claw and the cat striate cortex. Neurons in the crayfish claw control system produced favored patterns in 23 of 30 spike trains under a variety of experimental conditions. Favored patterns generally consisted of 3-7 spikes and were found to be in excess by both quantized and template methods. Spike trains from area 17 of the lightly anesthetized cat showed favored patterns in 16 of 27 cases (in quantized form). Some patterns were also found to be favored in template form; these were not as abundant in the cat data as in the crayfish data. Most firing of the cat neurons occurred at times near stimulation, and the observed patterns may represent stimulus information. Favored patterns generally contained up to 7 spikes. No obvious correlations between identified neurons or experimental conditions and the generation of favored patterns were apparent from these data in either preparation. This work adds to the existing evidence that pattern codes are available for use by the nervous system. The potential biological significance of pattern codes is discussed.

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Preexposure of a Redundant Stimulus in a Different Context Attenuates Blocking

Perceptual and Motor Skills ◽

10.2466/pms.1989.68.3c.1211 ◽

1989 ◽

Vol 68 (3_suppl) ◽

pp. 1211-1217

Author(s):

Edward J. Rickert ◽

Angela Register

Keyword(s):

Visual Stimulus ◽

Indirect Effect ◽

The Other ◽

Redundant Stimulus ◽

Stimulus Preexposure

Using an extension of the blocking paradigm, the question of whether operations that reduce the associability of a stimulus (preexposure, redundancy) exert their effects independently of the context in which they are experienced was examined. Prior to conditioning two of the four groups received 20 presentations (4/day for 5 days) of a visual stimulus prior to its use as a redundant element in the blocking paradigm. Preexposure occurred in the same context as the training situation for one of the groups; the other group experienced the stimulus in an altered auditory, visual and olfactory environment. The other groups served as controls: one received the blocking regimen; the other served as an overshadowing control. An altered context during preexposure enhanced the associability of the redundant cue evidenced by an attenuation of blocking. This finding suggests that one indirect effect of context is the specification of a conditional relationship between stimulus and response such that operations which alter the associability of a stimulus are dependent upon the context in which they occur.

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On the functional significance of retrieval mode: Task switching disrupts the recollection of conceptual stimulus information from episodic memory

Brain Research ◽

10.1016/j.brainres.2017.09.032 ◽

2018 ◽

Vol 1678 ◽

pp. 1-11 ◽

Cited By ~ 4

Author(s):

Kristina Küper

Keyword(s):

Episodic Memory ◽

Task Switching ◽

Functional Significance ◽

Stimulus Information

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Grasping Partly Occluded Objects: Effects of Global Stimulus Information on Action

Perception ◽

10.1068/p6158 ◽

2009 ◽

Vol 38 (2) ◽

pp. 200-214 ◽

Cited By ~ 3

Author(s):

Janneke Lommertzen ◽

Rob van Lier ◽

Ruud G J Meulenbroek

Keyword(s):

Stimulus Information ◽

Occluded Objects

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Correspondence of Irrelevant Stimulus Information and Responses

Stimulus-Response Compatibility Principles ◽

10.1201/9780203022795.ch4 ◽

2006 ◽

pp. 73-95

Keyword(s):

Irrelevant Stimulus ◽

Stimulus Information

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Repetition Effects and Signal Classification Strategies in Serial Choice-Response Tasks

Quarterly Journal of Experimental Psychology ◽

10.1080/14640746808400157 ◽

1968 ◽

Vol 20 (3) ◽

pp. 232-240 ◽

Cited By ~ 88

Author(s):

Patrick M. A. Rabbitt

Keyword(s):

Reaction Times ◽

Repetition Effect ◽

Signal Classification ◽

Choice Response ◽

Information Load ◽

Stimulus Information ◽

Repetition Effects ◽

Response Information

Repetition-effects (Bertelson, 1965) were examined in three serial self-paced choice-response tasks in which each response was made to all members of a class of more than one signal, and in one task in which eight different responses were each made to one of eight different signals. Three kinds of transition between successive responses occur in such tasks: transitions between Identical responses where the same signal and response are immediately repeated, transitions between Equivalent responses where the same response is made to a new signal and transitions between New responses where neither signal nor response are repeated. The relative reaction-times for these three classes of events were found to vary as a function of stimulus information load, as a function of response information load and as a function of the level of practice which subjects attained in the task in question. These variations allow some comment on the utility of recent models for serial and parallel stimulus analysis as explanatory constructs for the repetition-effect.

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