Does Having to Remember the Position of a Target Improve Reaction Time?

Motor Control ◽  
1998 ◽  
Vol 2 (2) ◽  
pp. 142-147 ◽  
Author(s):  
Louise Parr-Brownlie ◽  
Jeffrey Wickens ◽  
J. Greg Anson ◽  
Brian Hyland
Keyword(s):  
Reaction Time ◽  
Beneficial Effect ◽  
General Principle ◽  
Task Difficulty ◽  
Delayed Response ◽  
Memory Requirement ◽  
Opposite Result ◽  
Fundamental Process ◽  
Response Task ◽  
Delayed Response Task

In the monkey, reaction time in a precued delayed response task was found to be faster when the animals had to remember the precue than when it was continually available (Smyrnis, Taira, Ashe, & Georgopoulos, 1992). We investigated whether this reflects a general principle that applies to all types of precued tasks. However, we found the opposite result in a simpler task in humans. Our findings suggest that the beneficial effect of a memory requirement on reaction time in the monkey may reflect an effect of task difficulty, rather than a fundamental process involved in all precued movement tasks.

Extrastriate Visual Areas Contribute to the Performance of a Spatial Delayed Response Task

NeuroImage ◽  
1998 ◽  
Vol 7 (4) ◽  
pp. S343
Author(s):  
R.A. Berman ◽  
J.A. Sweeney ◽  
K.R. Thulborn ◽  
C.L. Colby
Keyword(s):  
Delayed Response ◽  
Visual Areas ◽  
Response Task ◽  
Delayed Response Task

Spatial working memory assessment by a visual-manual delayed response task: a controlled study in schizophrenia

1999 ◽  
Vol 275 (1) ◽  
pp. 9-12 ◽  
Author(s):  
P Stratta ◽  
E Daneluzzo ◽  
P Prosperini ◽  
M Bustini ◽  
M.G Marinangeli ◽  
...  
Keyword(s):  
Working Memory ◽  
Spatial Working Memory ◽  
Controlled Study ◽  
Delayed Response ◽  
Memory Assessment ◽  
Response Task ◽  
Delayed Response Task

Hyperstriatal Lesions and Short-Term Retention of Non-Visual Information in Pigeons

1985 ◽  
Vol 37 (2b) ◽  
pp. 121-153 ◽  
Author(s):  
Euan M. Macphail ◽  
Steve Reilly
Keyword(s):  
Visual Information ◽  
Delayed Response ◽  
Control Performance ◽  
Unoperated Control ◽  
Short Term ◽  
Term Retention ◽  
Central Sets ◽  
Retention Intervals ◽  
Response Task ◽  
Delayed Response Task

Short-term retention of non-visual information was investigated using three series of hyperstriatal-lesioned and unoperated control pigeons. Neither retention (Experiment 1) nor acquisition (Experiment 3) of go/no-go alternation was disrupted by the lesions. Similarly, Experiments 2 and 5 failed to detect significant disruption of either retention or acquisition of spatial alternation. Increases in the retention intervals used in these tasks reduced accuracy in both groups but did not differently affect hyperstriatal as opposed to control performance. A lasting deficit was, however, obtained in a delayed-response task (Experiment 4), but this deficit, which was independent of retention interval, appeared to be the result, not of a disruption of memory, but of an exaggerated perseverative tendency. Experiment 6 confirmed that all three series of hyperstriatal birds showed disruption of reversals of a spatial discrimination. It is concluded that hyperstriatal lesions do not disrupt memory processes, and the hypothesis that hyperstriatal damage induces perseveration of central sets is discussed.

Temporally Irregular Mnemonic Persistent Activity in Prefrontal Neurons of Monkeys During a Delayed Response Task

2003 ◽  
Vol 90 (5) ◽  
pp. 3441-3454 ◽  
Author(s):  
Albert Compte, ◽  
Christos Constantinidis ◽  
Jesper Tegnér ◽  
Sridhar Raghavachari ◽  
Matthew V. Chafee ◽  
...  
Keyword(s):  
Prefrontal Cortex ◽  
Power Spectrum ◽  
Spike Train ◽  
Temporal Structure ◽  
Spike Trains ◽  
Delay Period ◽  
Delayed Response ◽  
Persistent Activity ◽  
Response Task ◽  
Delayed Response Task

An important question in neuroscience is whether and how temporal patterns and fluctuations in neuronal spike trains contribute to information processing in the cortex. We have addressed this issue in the memory-related circuits of the prefrontal cortex by analyzing spike trains from a database of 229 neurons recorded in the dorsolateral prefrontal cortex of 4 macaque monkeys during the performance of an oculomotor delayed-response task. For each task epoch, we have estimated their power spectrum together with interspike interval histograms and autocorrelograms. We find that 1) the properties of most (about 60%) neurons approximated the characteristics of a Poisson process. For about 25% of cells, with characteristics typical of interneurons, the power spectrum showed a trough at low frequencies (<20 Hz) and the autocorrelogram a dip near zero time lag. About 15% of neurons had a peak at <20 Hz in the power spectrum, associated with the burstiness of the spike train; 2) a small but significant task dependency of spike-train temporal structure: delay responses to preferred locations were characterized not only by elevated firing, but also by suppressed power at low (<20 Hz) frequencies; and 3) the variability of interspike intervals is typically higher during the mnemonic delay period than during the fixation period, regardless of the remembered cue. The high irregularity of neural persistent activity during the delay period is likely to be a characteristic signature of recurrent prefrontal network dynamics underlying working memory.

scholarly journals Mossy fibers in the cerebellar hemisphere show delay activity in a delayed response task

2014 ◽  
Vol 87 ◽  
pp. 84-89 ◽  
Author(s):  
Takahiro Ishikawa ◽  
Saeka Tomatsu ◽  
Yoshiaki Tsunoda ◽  
Donna S. Hoffman ◽  
Shinji Kakei
Keyword(s):  
Mossy Fibers ◽  
Cerebellar Hemisphere ◽  
Delayed Response ◽  
Response Task ◽  
Delayed Response Task

Ocular-Motor Delayed-Response Task Performance among Schizophrenia Patients

1996 ◽  
Vol 34 (2) ◽  
pp. 67-71 ◽  
Author(s):  
Jennifer E. McDowell ◽  
Brett A. Clementz
Keyword(s):  
Task Performance ◽  
Delayed Response ◽  
Ocular Motor ◽  
Response Task ◽  
Delayed Response Task
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